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12V VOLTAGE SENSITIVE RELAY

Code: R.4015

£23.90 +VAT

Available in 7 days

Same Day Despatch Order before 4pm
Free Delivery On orders over £100 to UK mainland
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Key Features:

  • 2 tools in 1
  • Useful when crimping RG58 SMA & Fakra connectors as only 1 tool needed
  • Ratchet mechanism ensures a consistent professional crimp every time
  • Suitable for: BNC, FME, SMA, TNC, FAKRA

 

Voltage Sensitive 12V Relay

A 12V Voltage Sensitive Relay (VSR) is an automatic battery management device designed to charge multiple batteries from a single charging source while preventing unwanted battery drain. Commonly used in cars, campervans, motorhomes, boats, and 4x4 vehicles, a VSR monitors battery voltage and automatically connects a secondary battery when the charging voltage rises, then disconnects it when the voltage drops.

This intelligent operation ensures that the starter battery remains protected while allowing an auxiliary or leisure battery to be charged efficiently. Easy to install and highly reliable, a 12V voltage sensitive relay eliminates the need for manual switching and helps maximise battery performance and lifespan.

Key Features

  • Automatic battery charging management
  • Suitable for 12V electrical systems
  • Protects the starter battery from discharge
  • Charges auxiliary and leisure batteries efficiently
  • Voltage-sensitive automatic connect/disconnect operation
  • Compact, durable, and easy to install
  • Ideal for automotive, marine, and leisure applications

Applications

  • Campervans and motorhomes
  • Boats and marine systems
  • 4x4 and off-road vehicles
  • Commercial vehicles
  • Dual battery installations
  • Leisure battery charging systems

Specification:

Continuous Rating : 12VDC/140 amps
Sense: Dual
Engage Voltage: 13.7VDC
Disengage Voltage: 12.8VDC
Ignition Protected: UL1107
Stud: M6
Ground : Negative, 0.5M/18 AWG wire
Weight: 0.2Kg
Dimensions: 68mm x 68mm x 49mm
Mounting Screws: 4.8 x 50mm and 3.5 x 13mm

Fast & Reliable Delivery

We aim to get your order to you as quickly as possible. In-stock orders placed before 4pm Monday to Friday are dispatched the same working day, with most UK mainland orders delivered the next working day.

FREE UK mainland delivery on orders over £100 + VAT. Smaller orders are charged at our standard delivery rate.

Once your order has been dispatched, we'll email you with tracking details so you can follow its progress.

Contact us for expert advice on your product selection or any technical questions you may have

Tel: +44 (0) 1423 340066
E-mail: sales@co-star.co.uk

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