{"product_id":"abb-spaj-144-c-combined-overcurrent-and-earth-fault-relay","title":"ABB SPAJ-144-C Combined Overcurrent and Earth-Fault Relay","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eIsolating distribution network anomalies with multi-stage discrimination, the \u003cstrong\u003eABB SPAJ 144 C\u003c\/strong\u003e serves as a secondary micro-processor based protection relay connected directly to secondary current transformers. This protective instrument incorporates an independent three-phase overcurrent assembly alongside a non-directional earth-fault unit to safeguard radial feeders against severe phase short circuits, thermal overloads, and earth leakage paths. Functioning as an active node within modern substation automation layouts, the \u003cstrong\u003eSPAJ 144 C\u003c\/strong\u003e provides serial communication options through dedicated bus interface modules, executing deterministic control tracking and fault monitoring to ensure localized grid stabilization.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.2rem; margin-bottom: 1.5rem;\"\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eThree-Phase Overcurrent Supervision:\u003c\/strong\u003e Integrates three independent measurement stages designated as I\u0026gt;, I\u0026gt;\u0026gt;, and I\u0026gt;\u0026gt;\u0026gt; to yield reliable time-delayed and instantaneous network trip profiles.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eDual Ground-Fault Elements:\u003c\/strong\u003e Provides a highly sensitive low-set ground fault stage Io paired with an un-delayed high-set Io\u0026gt;\u0026gt; element for comprehensive ground return fault trapping.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003ePhase Discontinuity Protection:\u003c\/strong\u003e Employs continuous mathematical calculation of the maximum-to-minimum current differential to detect single-phase conductor breakage and severe network unbalance.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eStandardized Inverse-Time Arrays:\u003c\/strong\u003e Embeds four independent IDMT time-current curve profiles conforming to international standard definitions plus unique structural RI and RXIDG inverse steps.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eCircuit-Breaker Failure Monitor:\u003c\/strong\u003e Incorporates a dynamic backup timer that initiates alternate upstream interrupter sequences if the local breaker mechanism fails to operate within 0.1 to 1.0 seconds.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eInternal Diagnostics System:\u003c\/strong\u003e Uses a continuous self-supervision mechanism with auto-diagnosis that tracks hardware validity, auxiliary voltages, and internal register health.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.2rem; margin-bottom: 1.5rem;\"\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003eSelective phase-to-phase and ground fault isolation on radial distribution feeders within utility networks.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003eEarth-fault tracking inside isolated neutral networks and networks utilizing resistively earthed ground paths.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003eComprehensive transformer secondary bank backup protection and major heavy industry motor feeder monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n\u003cth style=\"padding: 0.5rem; font-weight: bold; color: #1a365d;\"\u003eRelay Configuration \/ Catalog Description\u003c\/th\u003e\n\u003cth style=\"padding: 0.5rem; font-weight: bold; color: #1a365d;\"\u003eVerified Order Codes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eCombined overcurrent and earth-fault relay SPAJ 144 C without test adapter\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eRS 611 040-AA, RS 611 040-CA, RS 611 040-DA, RS 611 040-FA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eCombined overcurrent and earth-fault relay SPAJ 144 C including test adapter RTXP 18\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eRS 611 240-AA, RS 611 240-CA, RS 611 240-DA, RS 611 240-FA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSuffix Code AA Configuration (fn = 50 Hz, Uaux = 80...265 V ac\/dc)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eRS 611 040-AA \/ RS 611 240-AA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSuffix Code CA Configuration (fn = 50 Hz, Uaux = 18...80 V dc)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eRS 611 040-CA \/ RS 611 240-CA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSuffix Code DA Configuration (fn = 60 Hz, Uaux = 80...265 V ac\/dc)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eRS 611 040-DA \/ RS 611 240-DA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSuffix Code FA Configuration (fn = 60 Hz, Uaux = 18...80 V dc)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eRS 611 040-FA \/ RS 611 240-FA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n\u003cth style=\"padding: 0.5rem; font-weight: bold; color: #1a365d;\"\u003eTechnical Parameter Category\u003c\/th\u003e\n\u003cth style=\"padding: 0.5rem; font-weight: bold; color: #1a365d;\"\u003eEngineered Specification Value\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eModel Reference\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSPAJ 144 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eBase Core Order Number\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1MRS 750360-MBG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eRated Current Input Options (In)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1 A or 5 A selectable via terminal routing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eRated Frequency Range (fn)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e50 Hz or 60 Hz depending on ordering selection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eContinuous Thermal Withstand (1 A Input)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e4 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eContinuous Thermal Withstand (5 A Input)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e20 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eThermal Withstand for 1 s (1 A Input)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e100 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eThermal Withstand for 1 s (5 A Input)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e500 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eDynamic Current Withstand Half-Wave Value (1 A Input)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eDynamic Current Withstand Half-Wave Value (5 A Input)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eInput Impedance (1 A Settings)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e\u0026lt;100 mOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eInput Impedance (5 A Settings)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e\u0026lt;20 mOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eAuxiliary Supply SPTU 240R1 Range\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e110\/120\/230\/240 V ac, 110\/125\/220 V dc, 80...265 V ac\/dc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eAuxiliary Supply SPTU 48R1 Range\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e24\/48\/60 V dc, 18...80 V dc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eQuiescent Power Consumption\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e~4 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eOperating Power Consumption\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e~8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eData Transmission Mode\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eFiber-optic serial bus link using ASCII protocols\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eSelectable Bus Transfer Rates\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e4800 Bd or 9600 Bd\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eDielectric Test Voltage (IEC 255-5)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e2.0 kV, 50 Hz, 1 min\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eImpulse Test Voltage (IEC 255-5)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e5 kV, 1.2\/50 us, 0.5 J\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eInsulation Resistance (IEC 255-5)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e\u0026gt;100 MOhm, 500 V dc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eService Ambient Operating Temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e-10...+55 Celsius\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eTransport and Storage Temperature Range\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e-40...+70 Celsius\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eEnclosure Protection Sealing Index\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eIP54 panel mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eNet Device Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e4.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eDevice Dimensions (Front Frame)\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e142 mm x 162 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eChassis Length Total Depth\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e250 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n\u003cth style=\"padding: 0.5rem; font-weight: bold; color: #1a365d;\"\u003eChassis Terminal Index\u003c\/th\u003e\n\u003cth style=\"padding: 0.5rem; font-weight: bold; color: #1a365d;\"\u003eFunction \/ Measuring Circuit Mapping\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1 - 3\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1 A Phase Current Measuring Input Terminal Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1 - 2\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e5 A Phase Current Measuring Input Terminal Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e4 - 6\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1 A Phase Current Measuring Input Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e4 - 5\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e5 A Phase Current Measuring Input Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e7 - 9\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1 A Phase Current Measuring Input Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e7 - 8\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e5 A Phase Current Measuring Input Group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e25 - 27\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e1 A Neutral Current Measuring Input (Io Ground Component)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e25 - 26\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e5 A Neutral Current Measuring Input (Io Ground Component)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e10 - 11\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eExternal Optically Isolated Logic Control Input Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e61 - 62\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eAuxiliary Supply Input Voltage Connections (Uaux)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e65 - 66\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eTripping Contact Subassembly Group Index 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e74 - 75\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eTripping Contact Subassembly Group Index 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e68 - 69\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSignalling Contact Group Mapping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e70 - 71 - 72\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSignalling Contact Group Mapping (Multi-point Contacts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e77 - 78\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSignalling Contact Group Mapping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003e80 - 81\u003c\/td\u003e\n\u003ctd style=\"padding: 0.5rem;\"\u003eSignalling Contact Group Mapping\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.2rem; margin-bottom: 1.5rem;\"\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eFlush Panel Mount Integration:\u003c\/strong\u003e Mount the module housing directly within a panel cutout measuring 129 mm x 139 mm (+1 mm margin allowance) according to standard dim100 parameters. Secure via flush brackets.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eEarthing Control Rules:\u003c\/strong\u003e Fasten a solid copper trace route from the module grounding anchor node to the control cabinet primary bus framework to mitigate high-frequency surge potentials.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eCurrent Loop Circuit Validation:\u003c\/strong\u003e Prior to module slot maintenance or replacement, ensure all connected external secondary current transformer circuits are fully shorted out locally using bridging assemblies to prevent damaging overvoltage induction.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003e\n\u003cstrong\u003eOptical Bus Termination:\u003c\/strong\u003e Attach appropriate SPA-ZC 17 or SPA-ZC 21 external connection accessories to the asynchronous serial terminal array on the back panel when incorporating the system node into a master fiber optic ring network.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompliance and Certifications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.2rem; margin-bottom: 1.5rem;\"\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003eCE Marking according to the European Community Directive for EMC Compatibility\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003eIEC 255-5 Insulation, Dielectric, and Impulse Shock Design Verification Standard\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003eIEC 255-21-1 Mechanical Vibration Testing Compliance Class 1\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 0.25rem;\"\u003eIEC 255-21-2 Shock and Bump Withstand Registry Class 1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52668527018347,"sku":"SPAJ-144-C","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/abb-spaj144c-aa-combined-overcurrent-and-earth-fault-relay-eupiobxjktt_245afa1a-f52f-40cb-8ac3-2fceb2f18b18.jpg?v=1765532837","url":"https:\/\/www.plcprotech.com\/products\/abb-spaj-144-c-combined-overcurrent-and-earth-fault-relay","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}