Broyce Control / Broyce Control Ltd protection relays and monitoring devices

Broyce Control / Broyce Control Ltd equipment: ELRM earth leakage relays, IMD125 insulation monitors, LPRC three-phase relays, and LESW industrial timers.

Broyce Control / Broyce Control Ltd earth leakage relays and toroids

Broyce Control / Broyce Control Ltd ELRM44V and ELRB earth leakage relays operate with external BZCT toroids, delivering true RMS residual current detection for industrial power networks. The units ensure immediate trip signal output upon detecting insulation degradation.

Adjustable leakage trip sensitivity thresholds spanning from 0.03 up to 5 amperes
Configurable time delay response settings programmable between 0 and 5 seconds
Seamless operation with external circular BZCT toroids from 35 up to 200 mm aperture
Compact 44 mm modular housing designed for direct snapping onto standard DIN rails

Broyce Control / Broyce Control Ltd insulation monitoring devices IMD125

Broyce Control / Broyce Control Ltd IMD125 and IMD100 devices continuously measure insulation resistance across unearthed IT distribution networks. Engineered for DC electric vehicle charging equipment and battery storage systems, they provide early fault detection.

Continuous insulation resistance supervision for DC systems operating up to 1250 V
Permissible system leakage capacitance threshold handling reaches up to 25 uF
Selectable charging modes designed for modern CCS and CHAdeMO vehicle infrastructure
Isolated MODBUS RTU interface outputting real-time diagnostic parameters to host PLCs

Broyce Control / Broyce Control Ltd three-phase monitoring relays LPRC

Broyce Control / Broyce Control Ltd LPRC/2 and LXPRC/S-4W three-phase monitoring relays protect motors and automation panels. The units continuously supervise phase sequence, phase loss, neutral loss, voltage asymmetry, and preset under-voltage and over-voltage window bands.

Combined under-voltage and over-voltage window monitoring with dedicated adjustments
Instant detection of incorrect phase sequence, phase failure, and neutral loss errors
Two independent SPDT relay outputs rated at 5 A for distinct alarm and trip triggers
Slim 17.5 mm DIN rail housing profile economizing valuable control cabinet space

Broyce Control / Broyce Control Ltd industrial time delay relays LESW

Broyce Control / Broyce Control Ltd LESW/2 and M1DID timing relays deliver precise delay and sequencing functions across machinery controls. Featuring multi-voltage operational capability, they provide switch-initiated delay-off logic with re-triggerable functionality.

Comprehensive timing interval adjustment spanning from 0.1 seconds up to 100 hours
Universal multi-voltage auxiliary power input operational from 12 up to 230 V AC/DC
Switch-initiated delay-off logic maintaining energised output during contact closure
Rugged DPDT electromechanical relay contacts rated for switching currents up to 8 A

Broyce Control / Broyce Control Ltd voltage and current monitoring relays

Broyce Control / Broyce Control Ltd LMCVR voltage and current relays provide dedicated monitoring for single-phase networks and industrial power equipment. Offering selectable measurement spans, adjustable hysteresis, and trip latching, they prevent recurring machinery faults.

Five selectable voltage monitoring spans covering inputs from 20 up to 500 V AC/DC
Adjustable trip thresholds, reset hysteresis margins, and response trip time delays
Integrated latching mode preventing automated restart prior to operator clearing
Complete galvanic isolation between voltage measuring inputs and power circuitry

Broyce Control / Broyce Control Ltd L-Series modular DIN housings and NFC

Modern Broyce Control / Broyce Control Ltd equipment utilizes advanced L-Series DIN rail enclosures featuring integrated NFC interfaces for contactless parameter setup. The thermal architecture and robust terminal clamps ensure continuous reliability in demanding environments.

Standardized modular housing widths of 17.5 mm, 35 mm, and 44 mm for DIN rails
Contactless configuration upload and diagnostic readout via secure mobile NFC
Self-extinguishing polymer engineering plastics delivering high dielectric ratings
Full compliance with IEC 60947-2, IEC 61812 standards, alongside UL listing marks

British instrument engineering history and Cambridgeshire development centre

British industrial manufacturer Broyce Control was established in 1963 as Broyce Control Engineering.

Across six decades the enterprise expanded from building heavy industrial control panels into a prominent developer of electronic monitoring relays, earth fault detectors, and high-voltage insulation measurement instruments.

Operational infrastructure combines headquarter manufacturing facilities in Wolverhampton alongside an advanced engineering development facility in Ely, Cambridgeshire.

The Ely centre utilizes Cambridge technological expertise to design digital signal algorithms, mobile NFC configuration interfaces, and direct current measurement platforms.

Earth leakage fault detection using ELRM relays and external BZCT toroids

ELRM44V and ELRB series earth leakage relays operate alongside external circular BZCT current transformers to deliver sensitive ground fault protection for electrical networks.

The devices evaluate true RMS electrical signals, preventing unwanted nuisance tripping driven by heavy harmonic distortion.

Adjustable trip sensitivity levels from 30 mA up to 5 A combined with programmable response time delays up to 5 seconds provide dependable selective discrimination across complex distribution boards. Upon sensing leakage currents, the relay immediately energises external shunt trip mechanisms.

Continuous insulation monitoring in unearthed IT distribution networks

Broyce Control IMD125 insulation monitoring devices maintain continuous supervision over unearthed IT electrical distribution circuits in compliance with international IEC 61557-8 requirements.

The instrument monitors dielectric integrity across DC power links operating up to 1250 V under full load conditions.

Optimized for electric vehicle DC rapid charging equipment complying with CCS and CHAdeMO standards as well as stationary battery energy storage systems, the device tolerates system leakage capacitances up to 25 uF.

Isolated MODBUS RTU serial links transmit insulation values to supervisory monitoring networks.

Three-phase voltage supervision using LPRC series protective relays

Three-phase modular relays across LPRC/2 and LXPRC series supervise operational parameters to safeguard three-phase induction motors from electrical disturbances. The units continuously verify phase rotation order, identifying single-phase dropouts, neutral line detachment, and voltage asymmetry.

An internal window comparator evaluates network voltages against selectable threshold bands, activating distinct visual LED indicators for high and low voltage anomalies. Dual isolated SPDT electromechanical contacts enable separate routing of alert signaling and motor contactor trip coils.

Industrial LESW time delay relays featuring switch-initiated logic

LESW/2 industrial timing relays execute configurable delay-off cycles initiated through an external dry switch contact. Closing the remote contact energises the output relay immediately, while opening the contact starts the programmed timing countdown cycle without resetting auxiliary control power.

A universal internal power circuit operates across AC and DC auxiliary voltages spanning 12 up to 230 V without external droppers.

Broad time range configurations covering 0.1 seconds up to 100 hours fulfill operational requirements across industrial pumping, HVAC ventilation, and packaging machinery.

Modular L-Series DIN rail housings and contactless NFC mobile interfaces

Modern Broyce Control protective units utilize compact L-Series modular enclosures with widths of 17.5 mm, 35 mm, and 44 mm designed for direct attachment onto standard 35 mm DIN rails.

The housings are precision molded from flame-retardant polymers offering superior electrical insulation properties.

Integrated near-field communication NFC interfaces embedded into front panels allow technical teams to review operational parameters, upload custom setup profiles, and retrieve historical fault logs using mobile applications even when host electrical control switchboards remain completely unpowered.

Broyce Control / Broyce Control Ltd and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Broyce Control / Broyce Control Ltd and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.