BEP 771-S-EZ Pro Installer EZ-Mount 400A Battery Selector Switch, 48V DC

The BEP 771-S-EZ Pro Installer EZ-Mount Battery Selector Switch is a front-wired battery switch built for boats running 12 to 48 volt DC electrical systems. Unlike conventional selector switches that require cabling from the rear, the EZ-Mount design lets the installer run and terminate cables from the front of the switch, which speeds up installation and keeps servicing straightforward in tight engine spaces. The switch controls battery bank selection with 1, 2, Both, and Off positions, and a removable knob allows the switch to be isolated during maintenance without disconnecting cabling.

Construction is fiber reinforced plastic, chosen for strength and resistance to the heat and chemical exposure typical of a marine engine compartment, and the switch is waterproof to IP66. Three removable side plates give access to the internal studs for wiring and add a layer of protection once installation is complete. The 10mm (3/8 inch) studs are tinned copper and paired with stainless steel washers and nuts to resist corrosion. The switch carries a 400 amp continuous rating, 600 amps for 5 minute intermittent loads, and 1500 amps for 10 second cranking bursts, and it is tested to UL1107 ignition protection standards and CE marked.

The 771-S-EZ shares its 3.85 inch by 3.85 inch mounting footprint and interconnection height with the rest of the BEP Pro Installer power management range, so it can be clustered directly with Pro Installer busbars and related components using solid link bars for a compact, organized installation.

Specifications

• Brand: BEP
• Manufacturer Part Number: 771-S-EZ
• Current Rating (Continuous): 400 Amps DC
• Current Rating (Intermittent, 5 minutes): 600 Amps DC
• Current Rating (Cranking, 10 seconds): 1500 Amps DC
• Voltage: 48 Volts DC (for 12-48V systems)
• Dimensions: 3.85 inches x 3.85 inches x 3.62 inches
• Mounting Footprint: 3.85 inches x 3.85 inches
• Operation Positions: 1, 2, Both, Off
• Stud Size: 3 x 10mm (3/8 inch)
• Mounting Type: Surface mount
• Material: Fiber reinforced plastic
• Water Resistance Rating: IP66
• Certifications: UL1107, CE
• Color: Black
• Weight: 1.05 pounds
• UPC: 843687007692

Frequently Asked Questions

What makes the EZ-Mount version different from a standard battery switch? The 771-S-EZ allows all cabling to be run and terminated from the front of the switch rather than the rear, which makes installation and later servicing easier in tight spaces, while keeping the same 400 amp continuous rating and mounting footprint as BEP's standard Pro Installer switches.

What amperage can this switch handle? The BEP 771-S-EZ is rated for 400 amps continuous, 600 amps for 5-minute intermittent loads, and 1500 amps for 10-second cranking bursts.

Is this switch waterproof? Yes, the 771-S-EZ is rated IP66, meaning it is protected against dust ingress and powerful water jets, which suits it to open engine bays and bilge areas.

What voltage systems does it work with? It is rated at 48 Volts DC and is suitable for 12 to 48 volt DC marine electrical systems.

What are the switch positions? The 771-S-EZ operates with four positions: 1, 2, Both, and Off, allowing selection of either battery bank, both banks together, or full disconnection.

What size cable and studs does it use? The switch has three 10mm (3/8 inch) tinned copper studs with stainless steel washers and nuts for the battery cable connections.

What is the switch made of? The 771-S-EZ is constructed of fiber reinforced plastic, chosen for strength and resistance to the heat and chemicals found in a marine engine compartment.

Can I service the battery bank without removing all the wiring? Yes, the 771-S-EZ has a removable knob that allows the switch to be isolated for servicing, and three removable side plates provide access to the internal wiring.

What are the dimensions and mounting footprint? The switch measures 3.85 inches by 3.85 inches by 3.62 inches, with a 3.85 inch by 3.85 inch mounting footprint, matching the standard Pro Installer switch layout.

Does this switch meet marine ignition protection standards? Yes, the BEP 771-S-EZ is tested to UL1107 ignition protection standards and is CE marked.

How much does this battery switch weigh? The 771-S-EZ weighs 1.05 pounds.

Can this switch be combined with other BEP power management products? Yes, the 771-S-EZ shares its interconnection height with the rest of the BEP Pro Installer range, so it can be clustered with Pro Installer busbars and other components using solid link bars.