The 3BSE008514R1 (DO820) is a high-density, 8-channel digital output relay module within the ABB S800 I/O family. Engineered for maximum versatility in industrial automation, this module provides high-current switching capabilities for both AC and DC loads. Its primary strength lies in its individually galvanic isolated channels, making it an ideal choice for diverse control applications where different voltage potentials or electrical isolation between circuits are required.
Whether integrated into the Advant OCS, 800xA, or Compact Product Suite systems, the DO820 serves as a robust interface for driving solenoids, motor starters, and actuators. It enhances system reliability by protecting sensitive control electronics from field-side electrical noise and surges.
The DO820 is designed for seamless integration and rugged performance in demanding DCS and PLC environments:
| Model | DO820 |
| Product ID | 3BSE008514R1 |
| Brand | ABB |
| Origin | Estonia |
| Output Type | Relay (8 Channels) |
| Voltage Range | 24 to 230 VAC / 24 to 230 VDC |
| Current Rating | 3 A per channel |
| Isolation | Individually Galvanic Isolated |
| Operating Dimensions | 102 mm × 119 mm × 45 mm |
| Product Net Weight | 0.3 kg |
| RoHS Compliance | Following EU Directive 2011/65/EU |
Can the DO820 handle different voltage sources on the same module?
Yes. Because each channel is individually galvanic isolated, you can switch 230 VAC on one channel and 24 VDC on another without electrical interference.
What happens if I exceed the 3 A current rating?
Relay contacts may experience arcing or welding if overloaded. For loads exceeding 3 A, use an external interposing relay or apply proper surge suppression.
Which Module Termination Unit (MTU) should I use?
Selection depends on wiring density and safety requirements. TU811 is a standard compact MTU, while TU813 and TU831 provide alternative terminal configurations.
Arc Suppression:
Install a flyback diode for DC inductive loads. For AC loads, use an RC snubber to extend relay contact life.
Thermal Management:
If all eight channels operate at maximum current simultaneously, ensure adequate cabinet ventilation to prevent heat buildup.
Mounting Orientation:
Mount vertically on a DIN rail via the compatible MTU. Confirm the locking mechanism is fully engaged to avoid vibration-related contact issues.
Hot Swapping:
S800 I/O modules support HCIR, but always disconnect field power or ensure the process is in a safe state before removal.
Global Express Shipping
Returns & Warranty
Manufacturer: ABB
Product No.: 3BSE008514R1
Country of origin:Sweden
Product Type: Digital Output Relay Module
Barcode: 85389091
Payment: T/T, Western Union
Weight: 300g
Dimensions: 102 mm × 119 mm × 45 mm
Shipping port: Xiamen
Warranty: 12 months
The 3BSE008514R1 (DO820) is a high-density, 8-channel digital output relay module within the ABB S800 I/O family. Engineered for maximum versatility in industrial automation, this module provides high-current switching capabilities for both AC and DC loads. Its primary strength lies in its individually galvanic isolated channels, making it an ideal choice for diverse control applications where different voltage potentials or electrical isolation between circuits are required.
Whether integrated into the Advant OCS, 800xA, or Compact Product Suite systems, the DO820 serves as a robust interface for driving solenoids, motor starters, and actuators. It enhances system reliability by protecting sensitive control electronics from field-side electrical noise and surges.
The DO820 is designed for seamless integration and rugged performance in demanding DCS and PLC environments:
| Model | DO820 |
| Product ID | 3BSE008514R1 |
| Brand | ABB |
| Origin | Estonia |
| Output Type | Relay (8 Channels) |
| Voltage Range | 24 to 230 VAC / 24 to 230 VDC |
| Current Rating | 3 A per channel |
| Isolation | Individually Galvanic Isolated |
| Operating Dimensions | 102 mm × 119 mm × 45 mm |
| Product Net Weight | 0.3 kg |
| RoHS Compliance | Following EU Directive 2011/65/EU |
Can the DO820 handle different voltage sources on the same module?
Yes. Because each channel is individually galvanic isolated, you can switch 230 VAC on one channel and 24 VDC on another without electrical interference.
What happens if I exceed the 3 A current rating?
Relay contacts may experience arcing or welding if overloaded. For loads exceeding 3 A, use an external interposing relay or apply proper surge suppression.
Which Module Termination Unit (MTU) should I use?
Selection depends on wiring density and safety requirements. TU811 is a standard compact MTU, while TU813 and TU831 provide alternative terminal configurations.
Arc Suppression:
Install a flyback diode for DC inductive loads. For AC loads, use an RC snubber to extend relay contact life.
Thermal Management:
If all eight channels operate at maximum current simultaneously, ensure adequate cabinet ventilation to prevent heat buildup.
Mounting Orientation:
Mount vertically on a DIN rail via the compatible MTU. Confirm the locking mechanism is fully engaged to avoid vibration-related contact issues.
Hot Swapping:
S800 I/O modules support HCIR, but always disconnect field power or ensure the process is in a safe state before removal.
| Product Image | Model Number / Title | Condition | Availability | Action |
|---|---|---|---|---|
|
ABB 3BSE008544R2 AI820-eA S800 I/O Analog Input Module | Original New | In Stock | View Details |
|
ABB 3BSE008546R2 AO820-eA S800 Analog Output Module | Original New | In Stock | View Details |
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 |
White
Beige
|
| Country of origin |
Sweden
|
| Power source |
AC-powered
DC Power
|
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