Bussmann ER12-40N3SR - 40A, Disconnect Switch

Meet the Bussmann ER12-40N3SR 40A Disconnect Switch — engineered for industrial and commercial environments where safe electrical isolation isn’t optional, it’s essential. This switch is built to support proper lockout/tagout procedures while delivering dependable disconnection under load, backed by long-term durability you can rely on.

Why the ER12-40N3SR stands out

• 40A current rating handles typical motor loads, feeders, and control circuits with confident reliability.
• Lockout/tagout readiness integrates with standard safety practices, helping protect personnel during maintenance and service operations.
• Dependable disconnection under load ensures circuits can be isolated safely even when equipment is energized, reducing downtime and risk.
• Durable design for harsh environments built to withstand the demands of busy facilities, delivering consistent performance over the long term.

Ideal for whom and where

• Maintenance teams, electricians, and safety officers responsible for motors, pumps, fans, conveyors, and other controlled loads
• Plant managers seeking reliable, compliant isolation solutions to enhance safety protocols
• Contractors and service providers needing a rugged, dependable disconnect switch for both temporary and permanent installations

Practical use cases

• Shutting down machines for preventive maintenance or calibration without the risk of unexpected startups
• Isolating a circuit in a panel during wiring changes, testing, or fault isolation
• Providing a clear, safe point of isolation in electrical rooms or equipment areas for routine procedures

Specification snapshot

• Amperage Rating: 40A
• Product Type: Disconnect Switch
• Brand: Bussmann
• Model: ER12-40N3SR

Choose the Bussmann ER12-40N3SR for a robust, safety-first disconnect switch that blends practical safety features with reliable performance. It’s the informed choice for isolating power responsibly, streamlining maintenance, and keeping operations progressing smoothly.