Marine Battery Selector Switch 300 A

The Battery Selector Switch model 01638 is a robust, key-operated battery management switch tailored for marine environments. Built from corrosion-resistant metal, it accepts up to four cables and measures a compact 71.76 × 71.76 mm.panel-friendly size.

Designed for 300 A continuous current and 500 A instantaneous load (450 A for dual-circuit version), it handles high-demand marine applications such as engines, inverters, and service loads. The large rotary dial offers ON/OFF, 1‑2‑BOTH and dual-circuit functionality, depending on variant. The removable key ensures safety and prevents unauthorized use.

Available in three configurations:

• 01638‑1: ON/OFF single circuit (48 V)
• 01638‑2: 1‑2‑BOTH selector (32 V)
• 01638‑3: Dual-circuit key switch (32 V)

Whether isolating power, combining banks, or controlling multiple circuits, Model 01638 provides flexibility, safety, and reliability on board.