Processing secondary line currents to secure distribution assets, the ABB SPAJ 110 C-AA operates as a micro-processor based sensitive earth-fault secondary protection relay. This intelligent electronic device tracks residual neutral currents via current transformer lines to safeguard radial feeders, power transformers, and heavy industrial motors against high-impedance insulation failure and phase-to-ground faults. Operating as an autonomous or networked component within substation switchgear arrays, the SPAJ 110 C-AA integrates an independent dual-stage protection structure, non-volatile operational registers, and continuous auto-diagnosis routines that report system metrics via an asynchronous serial link to maximize grid uptime.
| Technical Parameter Category | Engineered Specification Value |
|---|---|
| Manufacturer | ABB |
| Model Designation | SPAJ 110 C-AA |
| Product ID Reference | SPAJ 110 C-AA |
| Core Sub-module Included | SPCJ 1C8 (Sensitive Earth-Fault Module) |
| Part Classification | Original New Part |
| Rated Input Frequency (fn) | 50 Hz (AA Configuration) |
| Auxiliary Operating Voltage (Uaux) | 80...265 V DC or AC (AA Configuration) |
| Alternative Voltage Factory Range | 18...80 V DC |
| Rated Measuring Neutral Current (In) | 1 A or 5 A selectable via hardware terminals |
| Low-Set Earth-Fault Range (Io>) | 0.1...0.8 x In (Definite-time or IDMT options) |
| High-Set Earth-Fault Range (Io>>) | 0.1...10.0 x In or infinity (Definite-time) |
| Data Communication Interface | Rear panel plastic or glass fiber-optic serial port using SPA bus protocol |
| Enclosure Sealing Rating | IP54 flush panel-mounted format |
| Customs Tariff Number | 85364900 |
| Country of Origin | Finland (FI) |
| Product Net Weight | 2.850 kg |
| Gross Weight | 2.850 kg |
| Minimum Order Quantity | 1.000 piece |
| Terminal Allocation Index | Circuit Line Function / Signal Mapping |
|---|---|
| 25 - 27 | Residual Earth-Fault Current Input Io (1 A configuration mapping) |
| 25 - 26 | Residual Earth-Fault Current Input Io (5 A configuration mapping) |
| 10 - 11 | External Binary Control Interface (Optically Isolated Input Channel) |
| 61 - 62 | Auxiliary System Supply Power Inputs (Uaux) |
| 65 - 66 | Internal Relay Failure (IRF) Watchdog Output Contact Loop |
| 68 - 69 | Main Circuit Breaker Primary Heavy Tripping Output Relay Matrix |
| 74 - 75 | Secondary / Backup Tripping Contact Output Relay Matrix |
| 70 - 71 - 72 | Signalling Output Contact Array (Configurable Start / Trip Alarms) |
The SPAJ 110 C-AA is built using standard dim100 sub-rack dimensions, sharing identical technical installation profiles with other devices in the SPAJ protection range. The core internal computing card is designated as model SPCJ 1C8, which can be extracted during service parameters verification. When integrating this hardware configuration as a drop-in update for legacy standalone earth-fault equipment, check master bus configuration registers and verify that local network addresses match variables V101 and V102 to secure stable host polling.
In heavy industrial operations featuring constant motor starting curves or significant harmonic distribution profiles, pay close attention to the low-set Io> filter states. If localized ambient enclosures hover near 55 Celsius, continuous high burden steps may compromise internal chip timing loops. When permanent processing issues develop within the internal microcontroller loops, the system drops trip capability and illuminates the red IRF LED indicator on the front fascia, displaying explicit green codes such as 51 or 52 on the front digital indicator window.
Ensure that the central copper ground terminal block located at the back of the device chassis links back to the main switchgear earth rail with zero voltage offset. Inductive noise or floating ground potentials on the current transformer lines will cause erratic low-set ground fault starts when high primary current develops. For field validation routines, always utilize certified short-circuit bridging bars to isolate the external current transformer circuits prior to breaking open terminal blocks or pulling out the live internal processing module.
CRITICAL WARNING
Never extract the plug-in active processing sub-module from its casing structure without verifying that all connected current transformer measuring secondary loops are completely closed or shorted out. Open CT line loops generate severe electrical high-voltage arc tracking, risking permanent hardware destruction and serious personal injury.
Confirm that the panel face cutout fits standard dim100 spacing variables prior to inserting the outer protective metal housing case.
Tighten the side flush-mounting bracket screws in an alternating pattern to secure a balanced seal against the IP54 faceplate gasket elements.
Run a minimum 2.5 mm2 yellow-green copper earth lead from the rear M5 grounding terminal stud back to the main station protective ground plane.
Global Express Shipping
Returns & Warranty
Manufacturer: ABB
Product No.: SPAJ110 C-AA
Country of origin:Finland
Product Type: Earth-Fault Relay
Barcode: 85364900
Payment: T/T, Western Union
Weight: 2850g
Dimensions: 14.5 cm x 18 cm x 15 cm
Shipping port: Xiamen
Warranty: 12 months
Processing secondary line currents to secure distribution assets, the ABB SPAJ 110 C-AA operates as a micro-processor based sensitive earth-fault secondary protection relay. This intelligent electronic device tracks residual neutral currents via current transformer lines to safeguard radial feeders, power transformers, and heavy industrial motors against high-impedance insulation failure and phase-to-ground faults. Operating as an autonomous or networked component within substation switchgear arrays, the SPAJ 110 C-AA integrates an independent dual-stage protection structure, non-volatile operational registers, and continuous auto-diagnosis routines that report system metrics via an asynchronous serial link to maximize grid uptime.
| Technical Parameter Category | Engineered Specification Value |
|---|---|
| Manufacturer | ABB |
| Model Designation | SPAJ 110 C-AA |
| Product ID Reference | SPAJ 110 C-AA |
| Core Sub-module Included | SPCJ 1C8 (Sensitive Earth-Fault Module) |
| Part Classification | Original New Part |
| Rated Input Frequency (fn) | 50 Hz (AA Configuration) |
| Auxiliary Operating Voltage (Uaux) | 80...265 V DC or AC (AA Configuration) |
| Alternative Voltage Factory Range | 18...80 V DC |
| Rated Measuring Neutral Current (In) | 1 A or 5 A selectable via hardware terminals |
| Low-Set Earth-Fault Range (Io>) | 0.1...0.8 x In (Definite-time or IDMT options) |
| High-Set Earth-Fault Range (Io>>) | 0.1...10.0 x In or infinity (Definite-time) |
| Data Communication Interface | Rear panel plastic or glass fiber-optic serial port using SPA bus protocol |
| Enclosure Sealing Rating | IP54 flush panel-mounted format |
| Customs Tariff Number | 85364900 |
| Country of Origin | Finland (FI) |
| Product Net Weight | 2.850 kg |
| Gross Weight | 2.850 kg |
| Minimum Order Quantity | 1.000 piece |
| Terminal Allocation Index | Circuit Line Function / Signal Mapping |
|---|---|
| 25 - 27 | Residual Earth-Fault Current Input Io (1 A configuration mapping) |
| 25 - 26 | Residual Earth-Fault Current Input Io (5 A configuration mapping) |
| 10 - 11 | External Binary Control Interface (Optically Isolated Input Channel) |
| 61 - 62 | Auxiliary System Supply Power Inputs (Uaux) |
| 65 - 66 | Internal Relay Failure (IRF) Watchdog Output Contact Loop |
| 68 - 69 | Main Circuit Breaker Primary Heavy Tripping Output Relay Matrix |
| 74 - 75 | Secondary / Backup Tripping Contact Output Relay Matrix |
| 70 - 71 - 72 | Signalling Output Contact Array (Configurable Start / Trip Alarms) |
The SPAJ 110 C-AA is built using standard dim100 sub-rack dimensions, sharing identical technical installation profiles with other devices in the SPAJ protection range. The core internal computing card is designated as model SPCJ 1C8, which can be extracted during service parameters verification. When integrating this hardware configuration as a drop-in update for legacy standalone earth-fault equipment, check master bus configuration registers and verify that local network addresses match variables V101 and V102 to secure stable host polling.
In heavy industrial operations featuring constant motor starting curves or significant harmonic distribution profiles, pay close attention to the low-set Io> filter states. If localized ambient enclosures hover near 55 Celsius, continuous high burden steps may compromise internal chip timing loops. When permanent processing issues develop within the internal microcontroller loops, the system drops trip capability and illuminates the red IRF LED indicator on the front fascia, displaying explicit green codes such as 51 or 52 on the front digital indicator window.
Ensure that the central copper ground terminal block located at the back of the device chassis links back to the main switchgear earth rail with zero voltage offset. Inductive noise or floating ground potentials on the current transformer lines will cause erratic low-set ground fault starts when high primary current develops. For field validation routines, always utilize certified short-circuit bridging bars to isolate the external current transformer circuits prior to breaking open terminal blocks or pulling out the live internal processing module.
CRITICAL WARNING
Never extract the plug-in active processing sub-module from its casing structure without verifying that all connected current transformer measuring secondary loops are completely closed or shorted out. Open CT line loops generate severe electrical high-voltage arc tracking, risking permanent hardware destruction and serious personal injury.
Confirm that the panel face cutout fits standard dim100 spacing variables prior to inserting the outer protective metal housing case.
Tighten the side flush-mounting bracket screws in an alternating pattern to secure a balanced seal against the IP54 faceplate gasket elements.
Run a minimum 2.5 mm2 yellow-green copper earth lead from the rear M5 grounding terminal stud back to the main station protective ground plane.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Greyish White
|
| Country of origin |
Finland
|
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