Broyce Control – B8PM – 3-Phase Under-Voltage, Phase-Loss & Sequence Relay

The Broyce Control BPM is a ‑phase monitoring relay designed to safeguard three-phase systems by detecting under-voltage, phase-loss, and phase-sequence errors. DIN-rail mounted on a PF-S -pin base, it features an adjustable trip delay and a SPDT relay output. This unit is discontinued but remains a reliable choice for legacy systems.

Key Features:

• Manufacturer: Broyce Control (UK)  

• Model / MPN: BPM (variants include BPM/, BPMU)  

• Functions: Monitors under-voltage, phase-loss, and phase-sequence on -phase, -wire systems  

• Mounting: DIN rail, PF-S -pin socket (supports up to  V)  

• Trip Voltage Ranges: User-configurable; e.g., – V, – V, – V, – V AC  

• Repeat Accuracy: ±.%

• Time Delay: Adjustable .– s (±%), plus ~ ms response time  

• Output: SPDT relay, rated AC  V /  A, AC  V /  A, DC  V /  A  

• Electrical Life: ≥, operations at rated load  

• Dielectric Strength:  kV AC (RMS); impulse withstand  kV (./ µs)  

• Housing: Orange flame-retardant UL-V plastic; weight ~ g  

• Approvals: CE and UL compliant; designed for industrial control applications  

• Operating Environment: – °C to + °C; humidity up to %