MCB Single Pole (1P)
Single-pole miniature circuit breaker used for overcurrent protection of an appropriately designed single-phase final circuit. Specify current rating, tripping curve and breaking capacity.
Explore Bule’s 14 listed circuit-protection product types in Addis Ababa, Ethiopia. Compare MCB, MCCB, RCCB, fixed ACB, isolators and protection relays.

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Bule’s current listed circuit-protection range includes the 14 product types below. Exact brands, models, ratings and stock quantities must be confirmed before ordering. Other protection devices are explained in our technical guide but are not listed as currently stocked products.
Single-pole miniature circuit breaker used for overcurrent protection of an appropriately designed single-phase final circuit. Specify current rating, tripping curve and breaking capacity.
Three-pole miniature circuit breaker for three-phase branch or distribution circuits. Match current rating, trip curve, fault level and upstream coordination.
Two-pole residual-current circuit breaker that detects imbalance to support earth-fault protection. It does not itself provide overload or short-circuit protection; specify type and sensitivity.
Four-pole residual-current circuit breaker for appropriate three-phase installations. Confirm required residual-current type, sensitivity, rated current and upstream overcurrent protection.
Three-pole moulded-case circuit breaker for three-phase feeders and distribution panels. Specify frame size, trip-unit rating, interrupting capacity and coordination requirements.
Fixed-mounted air circuit breaker used for main low-voltage distribution duties in appropriately designed switchboards. Confirm rated current, breaking capacity, trip unit and installation clearances.
Two-pole isolator for disconnecting appropriate circuits under the design requirements. Confirm utilization category, current rating and whether load-breaking duty is required.
Four-pole isolator for suitable three-phase distribution arrangements. Confirm the neutral-pole function, utilization category and equipment installation method.
Three- or four-pole switch-disconnector for isolation and load switching where supported by its utilization category. Confirm pole count, current rating and handle options.
Motor protective breaker used for appropriate motor feeders. Select adjustable current range against motor nameplate full-load current and required short-circuit coordination.
Monitoring relay for phase loss, sequence or other supported three-phase supply faults. Confirm monitored voltage, output contact arrangement and time delay settings.
Voltage monitoring relay that detects supply voltage outside configured limits. Confirm single-/three-phase compatibility, setting range, relay outputs and reset behavior.
Monitoring and protection relay used with an appropriate residual-current sensor and tripping arrangement. Specify sensing range, delay, CT compatibility and coordination.
Auxiliary or alarm contact for indication of circuit breaker status or trip condition. Compatibility is model-specific; verify NO/NC arrangement and mounting position.