
ML-ACR Automatic Charging Relay with Manual Control 12V 500A | 4Boats
BSS7622
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Regular price£430.00
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ML-ACR Automatic 12 V DC 500 A automatic charging relay with manual control for marine 12 V battery systems.
- Condition: Two engines are running — one relay open and one relay closed; Engine 1 Start and Engine 2 Start batteries are isolated to protect engine electronics.
- Condition: Engine starting — relay closed combining batteries; batteries are combined to share power in the event of a low start battery.
- Condition: Engine starting — relay open isolating batteries; batteries are isolated to protect sensitive electronics from voltage sags and spikes.
- Nominal voltage 12 V DC.
- Continuous rating 500 A; intermittent 700 A (5 min); cranking 1,450 A (30 s).
- Manual control switch with LOCK OFF for servicing; start assist and start isolation included.
- Operating current 13 mA (@ 25° C); live current switching 300 A @ 12 V DC; switching cycles 100,000.
- Cable size 4/0 AWG × 2; terminal stud 3/8"‑16 (M10); stud torque 15.82 Nm (140 in‑lb); operating temperature −10° C to 60° C; weight 0.93 kg (2.06 lb).
Tinned copper studs, #10 mounting and terminal ring clearance 28.45 mm (1.12 in) make this relay suited to rugged marine battery management and engine-start systems.
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