ABB ot125f4n2 125 amp load break switch 4 pole

Why Choose the ABB OT125F4N2 Switch Disconnector?

The ABB OT125F4N2 is a reliable and compact 4-pole switch disconnector designed for safe manual isolation of electrical circuits in industrial control panels, machinery and low voltage power distribution systems. As part of the proven ABB OT Series, it provides dependable switching performance for panel builders, OEMs and electrical engineers requiring secure circuit isolation.

This front operated, non-fusible switch disconnector is suitable for both base mounting and DIN rail mounting, giving installers flexibility when designing control cabinets and distribution assemblies. Its front protected clamp terminals, compact footprint and robust construction make it well suited to demanding industrial environments where safety, reliability and serviceability are essential.

With a 125 A current rating, 4-pole configuration and Product ID 1SCA105051R1001, the OT125F4N2 is ideal for three-phase systems requiring neutral isolation or additional pole switching. The operating handle and shaft are supplied separately, allowing the installation to be configured to suit the enclosure depth and panel layout.

Key Advantages

• Reliable 4-pole switch disconnector for industrial circuit isolation.
• 125 A rated operational current for low voltage applications.
• Front operated design for convenient panel access.
• Suitable for base mounting or DIN rail mounting.
• Non-fusible disconnect switch with front protected clamp terminals.
• Compatible with ABB handles, shafts and accessories for flexible installation.

Key Features

• ABB OT Series switch disconnector.
• 4-pole configuration.
• 125 A rated current.
• Front operated switching mechanism.
• Base mounted and DIN rail mountable construction.
• Non-fusible disconnect switch design.
• Front protected clamp terminals for secure wiring.
• Handle and shaft supplied separately for installation flexibility.

Technical Specifications

• Manufacturer: ABB
• Series: OT Switch Disconnectors
• Model: OT125F4N2
• Product ID: 1SCA105051R1001
• EAN: 6417019391816
• Product type: Switch disconnector / non-fusible disconnect switch
• Rated operational current: 125 A
• Number of poles: 4
• Rated operational voltage: Up to 690 V AC
• Rated insulation voltage: 750 V
• Rated impulse withstand voltage: 8 kV
• Operation: Front operated
• Mounting type: Base mounting / DIN rail mountable
• Terminal type: Front protected clamp terminals
• Protection rating: IP20
• Standards: IEC 60947-3 / UL / CSA / VDE
• Handle and shaft: Not included
• Dimensions (H × W × D): approx. 100 × 96.5 × 74 mm
• Weight: approx. 0.49 kg

Reliable Circuit Isolation for Industrial Panels

Switch disconnectors such as the ABB OT125F4N2 provide a safe and dependable way to isolate electrical circuits during servicing, inspection and maintenance. By allowing the supply to be manually disconnected, they help protect personnel and equipment while supporting safe working procedures in industrial installations.

The OT125F4N2 is particularly useful where a 4-pole arrangement is required, such as three-phase systems that require neutral switching or additional pole isolation. Its compact format and flexible mounting options make it well suited to control panels, distribution boards and machinery where dependable isolation is essential.

Typical Applications

• Industrial control panels and switchboards.
• Machine isolation and maintenance switching.
• Motor control centres and automation cabinets.
• Three-phase systems requiring neutral isolation.
• Low voltage power distribution systems.
• Panel building and OEM machinery applications.

Trusted by Panel Builders Worldwide

ABB OT Series switch disconnectors are widely used by electrical engineers, OEM machine builders and panel manufacturers to provide safe isolation, reliable switching and compact installation in industrial low voltage power systems.