Egis 8710-1900B XD Series 500A Mechanical Contactor / Battery Disconnect Switch (Bulk)

The Egis 8710-1900B is a heavy-duty, surface-mount mechanical contactor designed as a primary battery ON/OFF switch. Built on the rugged XD platform, it uses silver-alloy contacts for reliable high-current, full-voltage switching and longer life than legacy rotary switches. The bright, front-facing knob provides clear status and fast operation, while the sealed housing (IP67/IP6K9K) and ignition-protection rating (SAE J1171) make it ideal for engine rooms, vehicles, and exposed locations. M10 stainless studs accept large lugs; a removable cover protects terminations. With appropriate cable gauge, it supports up to 500A continuous and 1,500A momentary cranking.

• Function: Mechanical battery disconnect / contactor (manual ON/OFF).
• System Voltage: 8–36 VDC.
• Continuous Current Capability: Up to 500 A with dual 4/0 AWG; 300 A with single 4/0; 225 A with 2/0.
• Momentary/Cranking: Up to ~1,500 A (short duration).
• Live Current Switching Endurance: 10,000 cycles @ 12 V/300 A or 24 V/150 A.
• Mechanical Switching Life: 1,000,000 cycles.
• Terminals/Hardware: M10 × 1.5 stainless studs; serrated flange nuts; terminal stud torque 140 in-lbs.
• Environmental/Protection: IP67 & IP6K9K sealed enclosure; ignition protected per SAE J1171.
• Operating Temperature: −40 °C to +125 °C.
• Vibration/Shock: 0.020" amplitude, 10–60 Hz, 24 hr (xyz); 20 g, 10,000 cycles shock.
• Ergonomics: Color-coded ON/OFF positions, bright yellow manual control knob.
• Extras: Removable terminal cover; compact footprint with reduced mounting depth.