Battery Switches & Timers

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For isolating or selecting batteries and controlling DC loads.

Battery Isolator Switches

Used to isolate a battery from the rest of the system.

BIS-1 & BIS-2 are moulded in black plastic with removable red key.

BIS-3 & BIS-4 are rotary switches   (red)

Battery Isolator Switch (BIS-3)
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Product Code Description Retail Price
(ex VAT)
BIS-1 100A battery isolator switch, 500 A for 5 secs, 24 Volt, M10 £11.38
BIS-2 250A Battery isolator switch, 2500A for 5 secs, 24 Volt, M10 £47.29
BIS-3 300A Battery isolator switch, 900A for 30 secs, 48 Volt, M10 £25.25
BIS-4 350A Battery isolator switch,1200A for 30 secs, 48 Volt, M10 £37.88
BIS-5 600A Battery isolator switch,1750A for 30 secs, 32 Volt, M12 £74.22

Battery Changeover Switches

Switch between one, two or both batteries with a firm off position. 

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Product Code Description Retail Price
(ex VAT)
BCS-1 Battery change-over switch 310 Amps, max 36V £44.68

Timer Switches

Ideal for controlling lighting, heating, pumping and ventilation systems. Digital display with up to 8 on and 8 off operations; manual on/off override; daily, weekend and 5 & 7 day week modes. Internal battery reserve stores memory. Panel mounting with voltage free changeover contacts. Uses 1.2W.

Contact Rating: 16A resistive; 3A inductive/capacitive.

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Product Code Description Retail Price
(ex VAT)
TM823/12 12VDC 16A digital timeswitch - panel mount £64.98
TM848/12 12VDC 16A digital timeswitch DIN Rail £61.80
TM823/24 24VDC 16A digital timeswitch - panel mount £64.98
TM823/48 48VDC 16A LCD digital timeswitch - panel mount £64.98

Victron Battery Balancer

Used to equalize the state of charge of two series connected 12V batteries, or of several parallel strings of series connected batteries. 

When the charge voltage of a 24V battery system increases to more than 27,3V, the Battery Balancer will turn on and compare the voltage over the two series connected batteries. The Battery Balancer will draw a current of up to 0,7A from the battery (or parallel connected batteries) with the highest voltage. The resulting charge current differential will ensure that all batteries will converge to the same state of charge.
If needed, several balancers can be paralleled.
A 48V battery bank can be balanced with three Battery Balancers.

Victron Energy Battery Balancer Front
Victron Energy Battery Balancer Front Angle
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Product Code Description Retail Price
(ex VAT)
VBB-BATAL Victron Battery Balancer £54.60