Sterling Power LR240 Pro Latch R Latching Relay, 12V/24V 240A
- Regular price
- $178.60
- Sale price
- $178.60
- Regular price
-
$188.00
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 LR240 (Pro Latch R) is a 240A latching relay for 12V and 24V systems in RVs, vans, boats and overland rigs. Set it up as a split-charge relay, a battery-protect relay or an engine-start protect relay, depending on what your system needs.
An ordinary relay burns power the whole time it is closed, which can eat most of what a small solar panel makes. A latching relay locks its contacts in place and only needs a short pulse to switch, so Sterling rates this control circuit at about 0.5mA. That matters when solar or wind is topping up your batteries with the engine off.
Features
- Three operating modes: split charging (one-way or both-way), battery protection, and engine-start protection
- Automatically selects 12V or 24V: powers up as 12V below 16.5V and as 24V above 17V
- Factory-preset trigger points that can be fine-tuned with a magnetic swipe (useful for lithium banks): 'on' 10.4V to 15V, 'off' 10.0V to 14.6V (double for 24V)
- Built-in starter disengage circuit opens the relay while the starter cranks, protecting it from the current surge
- Charge mode can trigger from whichever side reaches the trigger voltage first, or one direction only
- Battery-protect mode gives a warning before cutting power: off for 10 seconds, then back on for 1 minute so you can start the engine or a charger
- No limit to the number of battery banks you can charge
- Optional LRR remote (sold separately, 5 m cable) shows input or output voltage, high-voltage trip alarm at 16V (32V on 24V), relay status, 1-minute emergency override and a mutable alarm; Sterling says the remote is needed to reset the relay after a battery-protect trip
Specifications
- Model: LR240
- System voltage: 12V or 24V, auto-selected
- Continuous current: 240A
- Max intermittent current: 1500A
- Quiescent current: 0.5mA
- Output stud: 8 mm
- Adjustable 'on' trigger: 10.4V to 15V (x2 for 24V)
- Adjustable 'off' trigger: 10.0V to 14.6V (x2 for 24V)
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.
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