Reliable. Compact. Cost-Effective.

The 3120 thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120 is ideally suited for overload protection of motors, pumps, transformers and cables. After tripping, it can reliably, easily and quickly be reset. The positively trip-free mechanism ensures reliable disconnection of the circuit even with the actuator blocked.

Benefits:

• Dual Functionality: Combines a circuit breaker and switch in a single compact unit.
• High-Performance Bimetal Technology: Responds to overloads based on current intensity and ambient temperature for precise protection.
• Quick Reset: Eliminates downtime and the hassle of replacing fuses.
• Cost-Effective Design: Streamlines installation, wiring, and logistics—ideal for mass production or modular systems.

Versions Upon Request:

• ON/OFF Switch without overcurrent protection according to the relevant standard for switches for appliances IEC/EN 61058
• Thermal-Magnetic version for an additional short circuit protection

Typical Applications:

• Medical and Laboratory Equipment
• Apparatus and Machine Construction
• Professional Tools
• Household and Garden Appliances
• Offices Machines
• Audio Equipment
• Machine Tools

Key Features:

• Single or double pole thermal circuit breaker/switch combination
• Voltage ratings: AC 240 V, DC 50 V
• Current rating range: 0.1 … 20 A (up to 30 A upon request)
• Optional: push-in terminals for easy and quick wiring with a long-term stability
• Functional extension options with add-on modules for low voltage release, auxiliary contact function or remote trip

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

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

The construction industry is under pressure: forward-looking, energy-saving targets require the construction of ever more efficient buildings, and in ever shorter times. Neither can be achieved without perfected building automation.

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

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

Schurter are pleased to announce that the OGD fuse holder and the OG (Clip) 5x20 / 6.3x32 have received an uprating from UL to 1000 VAC/VDC.

This demonstrates the potential of their well-known and popular products, which even exceed initial expectations. This upgrade to 1000 V paves the way for new applications that require a higher voltage rating.

The enhanced voltage rating is effective immediately and includes the following part series:

OGD Series:
Fuseholder Open Design, 5 x 20 / 6.3 x 32 mm, THT, VDE: 250/500 VAC, UL/CSA: 1000 V, Cover, IEC 60335-1

OGD-SMD Series:
Fuseholder Open Design, 5 x 20 / 6.3 x 32 mm, SMD, VDE: 250/500 VAC, UL/CSA: 600/1000 V, Cover, IEC 60355-1

OG Series:
Clip, 5 x 20 / 6.3 x 32 mm, UR

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

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

First Vent Detection | Patented Rate of Change Algorithm | Automotive Grade

The Battery Safety Electrolyte Sensor (BES) is an automotive-grade sensor designed for early detection of venting and thermal runaway in battery systems. Utilizing an advanced and patented rate of change algorithm, the BES detects battery electrolyte vapor commonly released during the initial venting phase called First Vent, as well as hydrogen and carbon monoxide gases released during a thermal runaway event.

The ability to detect the First Vent provides an essential early warning for potential thermal runaway incidents in Lithium-Ion battery packs. This proactive early detection facilitates timely and appropriate mitigation measures, significantly reducing the risk of thermal runaway. BES employs a patented advanced rate of change algorithm designed to identify significant changes in the concentration of target gases within a sealed battery pack. This innovative method effectively reduces the occurrence of false negatives that may be seen with conventional ppm-based sensors, which focus on precise target gas threshold monitoring. The algorithm is tuned to prevent false positives, improving the end-user experience. Furthermore, the algorithm is supported by more than 12 years of rigorous research and validated through seven years of practical field deployment.

This extensive experience not only enhances the reliability of the detection algorithm but also underscores its effectiveness in real-world applications. BES enhances the safety and reliability of automotive battery systems.

Features:

• Responsive to battery electrolyte vapor released during the first vent (before thermal runaway)
• Responsive to hydrogen gas released during thermal runaway
• Responsive to carbon monoxide gas released during thermal runaway
• Patented rate of change algorithm to mitigate false negatives
• Resistant to siloxane poisoning
• Compatible with all Lithium-ion battery chemistries and cell types
• Automotive product with CAN 2.0B output with diagnostic features
• Tested for performance life of 15 years

Applications:
Sealed lithium-ion battery packs or modules used in

• Electric Vehicles
• Hybrid Vehicles
• Other On-Road Applications

Value to Customers:

• Enhanced Asset Protection:
  Battery electrolyte vapor monitoring provides early warning of thermal events, enabling thermal runaway prevention and asset preservation
• Reliable Battery Health Monitoring:
  BES responds to multiple gases that are typically released during thermal runaway, therefore increasing detection reliability and reduces false negatives
• Ease of Integration:
  The rate of change algorithm eliminates the need for precise target gas threshold testing and validation. As a result, it significantly reduces integration costs and timeline

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

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

GNR Series: Family of 22.5mm & 45mm Wide DIN Rail Mount Solid State Relays

The GNR Series is a family of 22.5mm and 45mm wide DIN Rail mount Solid State Relays with ratings up to 45 Amps at 600 VAC. The Relay or Contactor terminal configurations offer versatility. These ready to use SSRs come with an integral heat sink, eliminating the need for complex thermal calculations. GNR Series models are UL, CSA and TUV approved.

Features:

• Direct Bond Copper (DBC) Substrate
• LED input status indicator
• UL 508 Endurance Rating for Enhanced Reliability
• Built-in overvoltage protection
• DIN Rail or Panel Mount
• Zero voltage turn-on output

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

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

Finder Miniature PCB Relays 10 - 16A

The 45 Series products are miniature PCB relays for high ambient temperature + 105 °C / + 125 °C with the following features (according to Type):

Function & Features:

• Sensitive DC coil: 360mW
• Relay for +125°C ambient use
• Contact gap ≥ 3mm according to EN 60730-1
• 8mm, 6kV (1.2/50 μs) isolation, coil – contacts
• PCB mounting + 250 Faston

Applications:

• Burners, boilers and furnaces
• Film projectors
• Jacuzzis and hot tubs
• Electronic circuit boards

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

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

Our offer for motion solutions wouldn’t be completed without the essential complementary components that adapt the motors to meet the specific needs of the application.

Discover our different gearboxes, encoders and brakes.

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

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

With an extensive range of Push Button, Vandal Resistant, Piezo, Slide, Toggle and Rocker switches available, Bulgin & Arcolectric’s switch range is designed to meet the design requirements of a wide variety of industry applications ranging from medical and industrial to marine and commercial electronics.

Bulgin’s push button switches are available in front and rear panel mounted versions with three profile types including prominent, domed and low profile as well as rugged stainless steel anti vandal options.

Multiple switching options are available along with IP66, IP67 & IP68 sealed variants in addition to momentary and latching actuation. Illumination versions are available in dot and ring LED indication and a selection of illuminating colours, including bi-colour and tri-colour. Newer versions also feature LED illumination driven by 6V, 12V and 24V together with rear of panel sealing.

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

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

PLS4 xPole Miniature Circuit Breaker

The PLS4 miniature circuit breaker from the xPole series is a protective device equipped with both a thermal and an electromagnetic release that is available in 1-, 2-, 3-, 4- and 3+N pole versions. The PLS4 is compatible with AC and DC applications up to 48 V with rated currents from 0.16 A to 63 A and is available with tripping characteristics B and C. The switching capacity is 4.5 kA.

Core Features

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

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

Compact. Reliable. Globally Certified.

The 4230-T is a high-performance thermal-magnetic miniature circuit breaker (MCB) designed for DIN rail mounting, offering dependable protection with a compact footprint. Available in single-pole and multipole configurations, the 4230-T combines advanced safety features with global compliance, making it an ideal solution for a wide range of industrial and commercial applications.

Typical Applications:

• Protection of cables, motors, generators and transformers, thyristors and silicon rectifiers.
• Protection of computers and their peripheral equipment, industrial process control systems, telecommunications equipment, power supplies.

Key Features:

• Standards Compliant: Fully compliant with IEC/EN 60947-2 and UL 489, ensuring suitability for global markets.
• High Breaking Capacity: Rated up to 63 A, making it ideal for use as a Supplementary Protector in demanding environments.
• Snap Action Mechanism: A positively trip-free design ensures reliable disconnection, even under fault conditions.
• Toggle Actuation: With clear visual status indication for quick and easy monitoring.
• DIN 43880 Housing: Standard enclosure design fits seamlessly into existing panel layouts.
• Modular Flexibility: Expandable with auxiliary contacts, working current modules, and other add-ons to adapt to various use cases.
• Custom Trip Characteristics: A variety of trip curves are available to match your specific protection needs.

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

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