220 Electrical material 14 Built-in compartments Built-in compartments designed for flush mounting of battery isolators and battery switches Code Material battery isolator compartment Hole version Bore Ø mm Recess depth mm 14.561.02 ABS white - circular 143 70 14.561.03 ABS white 14.905.00; 14.920.00 Square 149x149 90 Voltage Sensitive Relay This relay allows simultaneous charging of two batteries with just one alternator. When the engine starts, the Voltage Sensitive Relay remains open until the starter battery reaches 13.7 / 27 V. At this point, the Voltage Sensitive Relay closes the contact and simultaneously charges the 2 batteries. When the engine stops and the voltage drops below 12.8 / 25.2 V, the Voltage Sensitive Relay opens the contact and separates the two batteries, thus preventing the discharge of the wrong battery and also avoiding current spikes harmful to the onboard electronics when the engine is restarted. Protects the starter battery from discharging due to onboard services. No voltage drop. No current absorption in standby mode. Easy to install without altering the alternator wiring. Automatic selection 12/24 V. Code V A Description mm 14.921.90 12/24 140 Voltage-sensible relay 68x68x50 VSR Voltage Sensitive Relay with Starter isolator Allows simultaneous charging of two batteries. Remains open until the starter battery reaches 13.7/27.0 V. At this point, it closes the contact and simultaneously charges both batteries. When the voltage of the start battery drops the isolator kit disengages from charging the auxiliary battery. This isolates the start battery and eliminates the possibility of draining it, ensuring that you always have enough charge to start your engine. No voltage drop. Protects the starter battery from the risk of discharging due to onboard services. No drop in voltage. Stand-by absorption 0.5 m/A. VSR indicator LED active and automatic selection 12/24 V. Functions: - Start Isolation: enforces temporary isolation during engine start-up to better protect onboard electronics. - ABE: with the engine at idle allows an extra charging period for both batteries, lowering the disconnection level to 12.2/24.5 V instead of 12.8/25.5 V.(*) - Storage Mode: reduces current consumption to 0 when engine is off.(*) - Manual ON-OFF operation possibility. - Front contacts (10 mm) for easier installation + transparent protective cover. (*These functions are OPTIONAL, can be activated only if desired). Code V A Description continuous intermittent 14.921.91 12/24 125 140 Voltage-sensible relay \ 14.921.35/36 \ 14.921.35/36 \ 14.921.37 LITTELFUSE® bistable automatic smart latching relay IP67 It connects the battery banks (starting + services) when alternator/battery charger are working and it disconnects the banks when the charging system stops. Supports high current loads (e.g., powerful inverters). Ability to connect battery banks in an emergency, with a simple switch control. Very low consumption in ON/OFF due to the bistable system. Meets ISO 8846/SAEJ1171. Deutsch 6-pin DTM male connector. Code V Max capacity A Control current Relay contact position for 10 sec in continuous closes (30 sec) with voltage closes (90 sec) with voltage opens (10 sec) with voltage opens (30 sec) with voltage opens circuit 14.921.35 12 1500 300 40 mA*/6 A** 13.5 V 13.1 V 12.3 V 12.7 V 16.5 V*** 14.921.36 24 1500 300 40 mA*/3 A** 27.0 V 26.0 V 24.0 V 25.5 V 32.4 V*** 14.921.37Deutsch 6-pole DTM female connector (DTM 06-65). * At rest ** In activation phase, 50 m/sec. *** System protection
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