ABB OTOT40G1-4MSN2Plus 40 A 4-Pole Base-Mounting Load Break Switch, Size G1, IP65 Black Handle

The ABB OTOT40G1-4MSN2Plus is a 4-pole load break switch rated at 40 A, engineered for safe and reliable isolation in industrial and commercial electrical installations. Its compact Size G1 design and base-mounting configuration make it a versatile choice for panel builders and maintenance teams.

Advantages

Built to IEC 60947-3 standards, this switch ensures dependable performance under demanding conditions. The black IP65-rated handle provides protection against dust and water jets, while the device itself offers IP20 protection. With a rated impulse withstand voltage of 8 kV and a rated insulation voltage of 750 V, it delivers high electrical safety. The switch is designed for direct operation, offering a clear on/off indication for secure load disconnection.

Suitable for

• Isolating and switching loads in motor control centers
• Maintenance disconnection in distribution boards
• Industrial machinery and control panels
• Commercial power distribution systems

Key specifications

• Number of poles: 4
• Rated operational current (Ie): 40 A
• Rated operational voltage: 690 V AC / 750 V DC
• Rated impulse withstand voltage (Uimp): 8 kV
• Rated insulation voltage (Ui): 750 V
• Rated short-time withstand current (Icw): 1 kA for 1 s
• Rated conditional short-circuit current (Icc): 50 kA with 40 A gG fuse
• Power loss: 2.5 W
• Mounting type: Base mounting
• Operating mechanism: Direct operation
• Handle type: OTOT_Handle_MSN2Plus (black, IP65)
• Shaft type: OTOT_Shaft_G1 (100 mm)
• Terminal type: Screw terminals
• Standards: IEC 60947-3

Recommendations

For optimal performance and safety, ensure proper sizing of upstream protection and verify compatibility with your enclosure. Regular inspection of the handle and terminals is recommended in harsh environments.