OT250E04K ABB 250 A 4-Pole Switch Disconnector with Direct-Mounted Handle

Why Choose the ABB OT250E04K Switch Disconnector?

The ABB OT250E04K, order code 1SCA022763R5210, is a 250 A 4-pole switch disconnector designed for dependable manual switching and electrical isolation in industrial and commercial low-voltage installations. Part of the established ABB OT switch-disconnector range, it combines high switching performance with a compact base-mounted design for integration into switchboards, control panels and distribution equipment.

The OT250E04K is a front-operated, base-mounted IEC switch disconnector supplied with an OTV250EK black Test-OFF-ON direct-mounted handle and operating shaft. The direct-mounted handle is padlockable in the OFF position, providing convenient local operation and supporting secure electrical isolation during servicing and maintenance.

With an open-air thermal current of 250 A and AC-22A and AC-23A operational current ratings of 250 A at 400–415 V AC, the OT250E04K is suitable for demanding switching duties. Its 1000 V insulation rating, 12 kV impulse withstand voltage and 8 kA short-time withstand current provide robust electrical performance for industrial power distribution applications.

Key Advantages

• Heavy-duty 250 A 4-pole switch disconnector for industrial switching and isolation.
• 250 A AC-22A and AC-23A rating at 400–415 V AC for demanding utilisation duties.
• Supplied with an OTV250EK direct-mounted Test-OFF-ON handle and shaft.
• Handle is padlockable in the OFF position to support safe maintenance isolation.
• 1000 V insulation voltage and 12 kV impulse withstand voltage provide robust electrical performance.
• Compact front-operated, base-mounted construction simplifies integration into switchboards and electrical panels.

Key Features

• ABB OT250 switch-disconnector series.
• 250 A open-air thermal current.
• 4-pole switching configuration.
• 250 A AC-22A / AC-23A rating at 400–415 V AC.
• Front-operated, base-mounted IEC construction.
• OTV250EK black direct-mounted handle included.
• M8 × 25 terminal bolt kit included as standard.
• Lug terminals for secure high-current electrical connections.

Reliable Four-Pole Electrical Isolation

The ABB OT250E04K provides a clearly defined means of manually switching and isolating low-voltage electrical circuits. Its four-pole configuration allows four conductors to be switched together, making the device particularly suitable for three-phase systems where the neutral conductor also needs to be disconnected as part of the isolation arrangement.

The combination of a 250 A current rating, AC-23A switching capability and a direct-mounted Test-OFF-ON handle makes the OT250E04K a practical solution for industrial machinery, distribution boards and switchgear assemblies. The padlockable OFF position also supports controlled maintenance procedures by helping prevent unintended manual operation of the switch.

Typical Applications

• Industrial machinery and equipment isolation.
• Main and sub-distribution switchboards.
• Three-phase and neutral electrical isolation.
• Motor and process equipment switching.
• Industrial control panels and electrical enclosures.
• Commercial and industrial power distribution systems.