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E. Preston Electrical

Manufacturing Partners

ABB

Contactors, overload relays, starters, circuit breakers, programmable controllers, switch fuses, fuse switches, load break switches, enclosed switches, fuse bases, fuse links, drives
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Arcolectric (Bulgin Ltd)

Indicator lights, switches, fuseholders, neons, signal lampholders, IEC inlets
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Bulgin

Battery-holders, filters (mains, power, RFI, pcb), connectors (“Polysnap” power inlet modules IEC power inlets, “Buccaneer” sealed, “Beau” interconnect), fuseholders, indicators, knobs, switches, terminals
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Bussmann

Circuit protection components: LV fuselinks, LV fusegear, electronic components, HV Components, high speed fuses
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Cherry

Desktop sets, mice, keyboards, mechanical MX switches and card-reading terminals
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Chint

Contactors, starters, MCB’s, RCB’s, pushbuttons, consumer units, indicator lights
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CML

LEDs (modules, star, multi & power LEDs), neon and LED indicators, sockets, industrial lamps, light pipes, CCFLs, inverters, lighting solutions (including architectural, traffic, marine and railroad lighting)
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Crouzet

Timers, monitoring relays, counters / ratemeters, temperature controllers, safety relays, Remote Monitoring / Control , Data logging, Logic controllers, Power Supplies / Convertors, Solid State Relays (SSRs) and Switches
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Crydom

Solid state relays (din rails, pcb and panel mount), auxiliary modules, I/O modules
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Cynergy3

Power semiconductors, power modules, high-voltage reed relays and liquid level / flow switches
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Eaton

Precise temperature independent circuit protection. Panel and DIN roll mountings. Hart toggle, rocker and pushbutton switches, switches for power tools and for hazardous and wet environments
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Essen Deinki

Micro Switches, Double-Break Switches, Micro Control Switches, Micro Control Sealed Switches, Sealed Miniature Microswitches, Limit Switchs, Loom Switches, Electronic Timers, Digital Panel Meters
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ETA

Circuit breakers for equipment (CBE’s). Product types include thermal, thermal-magnetic, hydraulic-magnetic, magnetic and high performance. Flow meters, level sensors, velocity sensors
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Finder

Impulse relays, multifunction timer relays, industrial relays, light dependent relays, miniature PCB relays, power relays, sockets and accessories, varistor and diode protection modules
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Honeywell

Snap action, limit, toggle, pressure and temperature switches. Position, speed and airflow sensors
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Hylec

Terminal blocks, pcb terminal blocks, ceramic terminal blocks, cable glands (including a waterproof range), grommets, connectors, plugs, lamp holders
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IDEM

Mechanical interlock switches, inc tongue, hinge & guard locking switches, magnetic & coded non-contact switches, grab wire safety rope switches, SCR safety relays & modus safety modules
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Johnson Electric

Microswitches (including the Saia and Burgess brands), limit switches, proximity and safety switches, ultraminiature switches, pushbuttons, snap action, door and key switches, Solenoids (LEDEX), Motors, and flat flexible cable (Parlex)
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Kraus & Naimer

UK solenoid, Blue Line switchgear, rotary cam switches, contactors, motorstarters, (enclosed) KG switch disconnectors, control stations
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Littelfuse

Circuit protection components, fuses (electronic, glass, ceramic, semiconductor, industrial, blade, auto), fuseholders, RFI filters, combi filters
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Moeller

Relays, contactors, starters, timers, foot and palm switches, limit switches, float switches, pressure switches, fuses, fuse enclosures, miniature circuit breakers, busbars, drives, enclosures, programmable controllers
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Schaffner

Powerline filters wlth IEC inlets, single-phase filters for chassis and pcb mounting, three-phase filters for chassis mounting, RFI suppression chokes, pulse transformers, custom filters ranging from 0.1A to 1200A
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Schurter

Power entry modules, appliance couplers, cordsets, EMC filters, fuseholders, fuses, switches, connectors, test jacks, test probes, voltage selection switches, indicators
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Scolmore

LED Downlights, Surface Lights, Walk-Over Lights, Emergency Signs, Wall Lights, Undercupboard Lights, Star Lights, Strip Lights, Bollards, Bulkheads, and Pendant Lights
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Tranilamp

Encapsulated transformer lamps, DC mains lamps, flashing lamps, solid state flashers, LED clusters, variable colour lamps, “push to test” buttons
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Werma

Signal towers, optical signal devices, optical-audible signal devices, audible devices, blinking/rotating/mirror beacons, LED/buzzer combinations
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Wieland

Modular terminals, terminal strips for lighting, domestic equipment and primed circuits, electronic housings, component plug connectors, multipole and high density, STI7/l8 lighting connectors, safety relays
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ZF Switches & Sensors

Snap Action Microswitches, Pushbuttons, Rocker Switches, Automotive Switches, Position Sensors, Magnetic Proximity Sensors, Gear Tooth Speed & Direction Sensors, and Energy Harvest Technology
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Can’t find what you’re looking for?

Featured Products

News

September 3, 2026

Finder 18 Series: PIR movement and presence detector 10A

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18 Series: PIR movement and presence detector 10A

Finder 18 series

The Finder 18 Series is a range of 14 movement and presence detectors in both indoor and outdoor versions, for ceiling and wall mounting.

Features (according to Type):

  • Small Size
  • Twilight Sensor and Delay Time

Versions with DALI interface and KNX interface are also available.

Applications:

  • Hotel Room Energy-Enabling Units
  • Lighting Control in Corridors (for hotels, offices and hospitals)
  • Offices, Swimming Baths and SchoolS
  • Staircase Light Control

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

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August 26, 2026

Schurter STTP 9550: Three-Terminal Fuse

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Schurter Three-Terminal Fuses (STTP) for Battery Systems

Schur 9550 pic

Intelligent Fuse Solutions for Battery Systems

  • Ultra-Low Contact Resistance for High Efficiency
  • High Contact Reliability for Low Signals
  • Enhanced Wear Resistance for Long‑Term Contact Integrity
  • Supports Miniaturization and High‑Power Density Design

The Schurter three-terminal fuses STTP 9550 combine conventional overcurrent protection with an actively triggered overcharge protection function, providing an additional layer of safety for lithium-ion battery systems.

In addition to current-dependent interruption, the integrated trigger terminal enables controlled activation in critical operating conditions. This allows reliable disconnection of charge and discharge paths even in the event of protection IC or FET failure.

Gold-plated terminals ensure low and stable contact resistance, high signal integrity, and
excellent corrosion resistance. The compact package supports high-power-density battery pack
designs ranging from 1 to 24 cells.

Applications:
Typical applications include energy storage systems, power tools, UPS equipment, e-bikes, e
scooters, and automated guided vehicles (AGVs). Supported by UL approvals and designed for
redundant protection architectures required by modern battery safety standards, three-terminal
fuses provide a robust and intelligent protection solution for advanced energy systems.

Schur 9550 app

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

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