ABB OT Plus OT63G1-3MS 63 A 3-Pole Switch Disconnector with Handle

Where dependable isolation and visible contact separation are non-negotiable, the ABB OT Plus OT63G1-3MS delivers a 63 A, 3-pole load break switch in a compact G1 frame. Unlike ordinary disconnectors that merely interrupt current, this unit is engineered to handle frequent switching under load while maintaining a clear, lockable OFF position for safe maintenance. The direct-operated mechanism and included black OHB65J6 handle provide a firm, tactile response, reducing the chance of ambiguous switching states in industrial and commercial panels.

Highlights

• Rated operational current of 63 A with 750 V AC insulation and operational voltage, suitable for demanding low-voltage circuits.
• High withstand ratings: 8 kV impulse voltage and 1.5 kA short-time current for 1 second, ensuring resilience against surges and short circuits.
• Versatile mounting options: front, base, or DIN rail, with IP20 protection on the main device and IP65 on the handle for harsh environments.
• Generous screw terminal capacity from 1.5 mm² to 35 mm², accommodating a wide range of conductors.
• Long service life: 20,000 mechanical operations and 1,500 electrical cycles, minimizing replacement frequency.

In daily use

Install the OT63G1-3MS as a main switch in distribution boards, motor control centers, or as a local isolator for machinery. The black handle can be padlocked in the OFF position, providing lockout/tagout compliance for maintenance crews. Its compact G1 frame saves panel space, while the robust construction ensures reliable performance even in demanding environments.

Full specifications

• Function: Load Break Switch / Switch-Disconnector
• Number of Poles: 3
• Rated Operational Current (Ie): 63 A
• Rated Insulation Voltage (Ui): 750 V
• Rated Operational Voltage (Ue): 750 V AC
• Rated Impulse Withstand Voltage (Uimp): 8 kV
• Rated Short-time Withstand Current (Icw): 1.5 kA for 1 s
• Rated Short-circuit Breaking Capacity (Icm): 3 kA (peak)
• Power Loss: 4.5 W
• Degree of Protection: IP20 (main device), IP65 (handle)
• Mounting Type: Front, Base, DIN Rail
• Terminal Type: Screw Terminals
• Terminal Capacity: 1.5 - 35 mm²
• Handle Type: Black OHB65J6 (included)
• Frame Size: G1
• Standards: IEC 60947-3
• Operating Mechanism: Direct operated
• Electrical Durability: 1500 cycles
• Mechanical Durability: 20000 cycles

Final note

Engineered for reliability and safety, the ABB OT Plus OT63G1-3MS is the professional choice for demanding switching applications.