BLK Series · CIRCUIT BREAKER
BLK Series Explosion-Proof Circuit Breaker
The BLK series explosion-proof circuit breaker combines protection and switching in one certified enclosure.
- Ex db eb IIB T5 Gb
- Ex db eb IIC T5 Gb
- Ex tb IIIC T95°C Db
- Ex markingEx db eb IIB T5 Gb; Ex db eb IIC T5 Gb; Ex tb IIIC T95°C Db
- ConstructionComposite: flameproof main chamber, increased-safety terminal chamber
- Breaking devicesHigh-breaking miniature or moulded-case circuit breakers
- OperationHandle on the enclosure cover
Overview
The BLK series explosion-proof circuit breaker combines protection and switching in one certified enclosure. The composite construction uses a flameproof main chamber with an increased-safety terminal chamber, and high-breaking miniature or moulded-case circuit breakers are operated through the handle on the enclosure cover. It protects circuits and supply equipment against overload and short-circuit faults and also serves as an infrequent motor starter.
Key features
- Housing in die-cast aluminium alloy or welded steel plate with high-pressure electrostatic powder coating, or welded stainless steel with stainless steel exposed fasteners
- Composite construction: flameproof main chamber with increased-safety terminal chamber
- Fitted with high-breaking miniature or moulded-case circuit breakers, operated by the handle on the enclosure cover
- Overload and short-circuit protection; also for infrequent switching of appliances and lighting circuits
- Protects circuits and supply equipment against overload and short-circuit faults; also an infrequent motor starter
- Rigid steel conduit or cable wiring
- Rated voltage (V): AC 220/380
- Rated current (A): ≤200
Indicative specification
| Ex marking | Ex db eb IIB T5 Gb; Ex db eb IIC T5 Gb; Ex tb IIIC T95°C Db |
|---|---|
| Construction | Composite: flameproof main chamber, increased-safety terminal chamber |
| Breaking devices | High-breaking miniature or moulded-case circuit breakers |
| Operation | Handle on the enclosure cover |
| Rated voltage | AC 220/380 V |
| Rated current | ≤200 A |
| Wiring method | Rigid steel conduit or cable |
Typical applications
- Lighting and power distribution circuits in Zone 1 and Zone 2
- Motor protection and infrequent starting
- Overload and short-circuit protection of supply equipment
- Infrequent switching of appliances and lighting circuits
Need a quotation for the BLK series? Send us your specification — model, ratings, entry threads and area classification — and our engineers will confirm the configuration and prepare the quotation.
Technical data is reproduced from the manufacturer’s product sheet for the BLK series. Please confirm the final configuration with our engineers before ordering.
