Sterling Power VSR240 Voltage Sensitive Relay, 12V/24V 240A
- Regular price
- $52.24
- Sale price
- $52.24
- Regular price
-
$54.99
Will it fit my RV?
We don’t list this part for specific RV brands. Compare the dimensions with the part you’re replacing before ordering.
Prepaid return label, no restocking fee. Details
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The Sterling Power VSR240 Pro Connect is an automatic 240A voltage sensitive split-charge relay for 12V and 24V systems. It is for boats, RVs, vans and trucks that need the alternator or a charger to feed a second battery bank, such as house, windlass or bow-thruster batteries.
It needs no ignition wire in its default mode: when it sees more than 13.3V, it assumes a charging source is running and joins the batteries, then separates them again when the voltage falls so house loads cannot drain the starter battery. By default it works in both directions, so a single-output inverter/charger on the house bank can also top up the engine battery. A starter-motor interlock keeps cranking current out of the relay, and spark suppression helps protect the contacts. For banks that may see loads far beyond the relay rating, Sterling recommends a current-limiting relay instead.
Features
- Fully automatic voltage-sensing operation, no ignition feed needed by default
- Three modes: engine-side activation, bi-directional (default) or one-way with ignition feed
- Adjustable connect and disconnect voltages
- Automatic 12V / 24V selection
- Very low voltage drop (about 0.01V)
- Waterproof to IP65 and SAE J1171 ignition protected
- Back-EMF spark arrester and suppression diodes
- Single and twin starter-motor disengage connections
- Quiescent current about 1 mA
- 5-LED display with 5 alarms and safety trips
- Emergency forced connection and high battery voltage trip
- Short circuit protection before engagement
Specifications
- Continuous rating: 240A
- System voltage: 12V or 24V, auto select (4-16V locks to 12V, 16-30V locks to 24V)
- Connect voltage: Above 13.3V (default, x2 for 24V)
- Protection: IP65, SAE J1171 ignition protected
- Quiescent current: About 1 mA
- Dimensions: 140 x 200 x 40 mm (5.5 x 7.9 x 1.6 in)
- Weight: 0.25 kg (0.55 lb)
Genuine Sterling Power with Sterling Power's warranty. Ships from our warehouse in Upland, California. Not sure it fits your setup? Ask us before you order.
Eligible unused and uninstalled physical products may be returned
within 30 days after delivery.
Regular sale and discounted products are eligible for return.
Only products clearly marked “Final Sale” before purchase are
non-returnable.
Conditions and exclusions apply. See our Return and Refund Policy.
Free standard shipping is available on eligible physical-product orders delivered within the contiguous United States, with no minimum order amount.
Black Series generic replacement parts and products or orders that are oversized, require freight shipping, are special-order, contain hazardous materials, or are delivered to remote or limited-access areas are excluded. Any applicable shipping charge will be displayed at checkout before you submit your order.
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