Why Choose the ABB 1SCA163443R1001 OT25G1-4MQN2 Switch Disconnector?
The ABB 1SCA163443R1001, also identified as the OT25G1-4MQN2, is a compact and dependable 25 A four-pole switch disconnector designed for safe electrical isolation in industrial, commercial and OEM applications. Part of the proven ABB OT Plus switch disconnector range, it offers reliable switching performance while supporting straightforward installation in control panels, distribution boards and machinery.
The switch features a front-operated mechanism with quick-spring terminals for rapid installation and a direct-mounted operating handle supplied as standard. The handle can be padlocked in the OFF position, improving operator safety during maintenance and helping prevent accidental reconnection.
With a rated operational current of 25 A, a four-pole configuration and an N2 neutral arrangement, the OT25G1-4MQN2 is ideal for isolating three-phase electrical systems. Its compact G1 frame supports both base mounting and DIN-rail installation, making it suitable for modern electrical enclosures with standard 45 mm DIN cut-outs.
Key Advantages
- Reliable 25 A switch disconnector for low-voltage electrical isolation.
- Four-pole design for switching three phases and neutral.
- Quick-spring terminals reduce installation time.
- Direct-mounted knob handle supplied as standard.
- Padlockable handle improves maintenance safety.
- Suitable for both base mounting and DIN-rail installation.
Key Features
- ABB OT Plus switch disconnector series.
- 25 A rated operational current.
- Four-pole IEC switch disconnector.
- N2 neutral configuration.
- Quick-spring terminal connections.
- Front-operated switching mechanism.
- Direct-mounted padlockable knob handle included.
- Suitable for base and DIN-rail mounting.
- Compact G1 frame.
- Designed for industrial low-voltage applications.
Reliable Isolation for Industrial Electrical Systems
The ABB OT25G1-4MQN2 provides safe manual isolation of electrical circuits during maintenance, servicing and inspection. Its four-pole switching mechanism disconnects all live conductors simultaneously, helping improve personnel safety while protecting electrical equipment.
The compact OT Plus design, combined with quick-spring terminals and flexible mounting options, makes this switch disconnector an excellent choice for panel builders, machine manufacturers and electrical contractors seeking dependable isolation equipment.
Typical Applications
- Industrial control panels.
- Electrical distribution boards.
- Motor control centres.
- OEM machinery.
- HVAC systems.
- Pumps, compressors and conveyors.
- Commercial and industrial electrical installations.
