ABB 751010G0808 Circuit Breaker Control Board
Delivery time 3 days
Product origin New/used
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ABB 751010G0808 Circuit Breaker Control Board DatasheetGeneral DescriptionABB 75
ABB 751010G0808 Circuit Breaker Control Board Datasheet
General Description
ABB 751010G0808 is a dedicated control circuit board designed for ABB VM1 series medium voltage vacuum circuit breaker. It manages breaker closing, tripping, position monitoring, interlock logic and status indication functions within the switchgear cubicle. The PCB integrates drive circuits, signal conditioning, opto-isolation and status feedback circuits. It receives external control commands from protection relays or local control switches and outputs drive signals to the breaker closing and tripping coils. Real-time collection of auxiliary contact signals provides breaker on/off position feedback and fault status reporting. The board includes built-in supervision for power supply and internal circuit health, and will trigger alarm signals upon abnormal detection. It is coated with conformal coating to resist dust, humidity and corrosive gas in substation cabinet environments. This board is a field replaceable spare part for VM1 vacuum circuit breaker, and its counterpart variant is 751010G0807.
Electrical Specifications
The control board accepts standard substation DC control supply, supporting 110 V DC or 220 V DC as main operating power. The board consumes low standby power. Isolated binary input channels pick up local/remote control commands and auxiliary contact position signals. Output drive circuits are configured to energize closing coil and trip coil of the vacuum circuit breaker. All field signal interfaces adopt galvanic isolation to suppress interference and transient overvoltage from switchgear operation. Internal surge protection components protect the board against voltage spikes induced by coil de-energization. Signal sampling and response time are optimized to meet fast trip requirements of medium voltage protection systems.
Environmental Specifications
Operating ambient temperature range is from -10 °C to +55 °C. Storage temperature range is from -40 °C to +85 °C. Relative humidity during operation is 5% to 95%, non-condensing. It is designed for installation inside metal-clad switchgear cabinet with IP20 protection level for the board assembly. The product complies with IEC 62271 standards for medium voltage switchgear and controlgear, and meets relevant EMC immunity requirements for substation environments.
Mechanical and Installation Information
This is a plug-in printed circuit board assembly with fixed mounting holes and terminal connectors for wiring connection. It is installed inside the operating mechanism compartment of ABB VM1 vacuum circuit breaker. The board is secured by fasteners, and wiring terminals are clearly marked for control power, command input, coil drive and status feedback signals. Conformal coating is applied over the PCB surface. Replacement requires isolation of control power supply before removal to avoid accidental breaker operation.
Application Notes
This control board is exclusively used for ABB VM1 medium voltage vacuum circuit breaker, not suitable for other ABB breaker models without modification. It supports both local panel control and remote electrical control via protection or bay control units. Proper wiring shielding and earthing are required to reduce electromagnetic interference. Regular inspection of terminal tightness and PCB condition is recommended during switchgear maintenance. Unused signal terminals shall be insulated as per VM1 operation manual. Test of closing and tripping function shall be performed after board replacement to verify correct operation.
Ordering Information
Product type: Circuit Breaker Control Board Part number: 751010G0808 Manufacturer: ABB Applicable equipment: ABB VM1 Medium Voltage Vacuum Circuit Breaker
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