1SCA022753R3390 ABB 315 A 4-Pole BS88 B1-B4 Fuse Switch

Why Choose the ABB OS315B22N2P Switch Fuse?

The ABB OS315B22N2P, product ID 1SCA022753R3390, is a heavy-duty 315 A four-pole British Standard switch fuse designed for reliable switching, electrical isolation and fuse protection in industrial and commercial low-voltage power distribution systems. As part of the ABB OS Fuse Switches range, it combines manual load switching with the protection provided by correctly selected fuse links.

The OS315B22N2P features a front-operated mechanism positioned between the poles and is designed for BS 88 B1–B4 fuse links. Its four-pole construction incorporates a switched fourth pole with a solid link, providing a practical configuration for electrical systems requiring four-pole switching alongside fuse protection.

Rated at 315 A for AC-20 to AC-23 duties at up to 690 V AC, the OS315B22N2P has AC-23 power ratings of 180 kW at 415 V, 220 kW at 500 V and 315 kW at 690 V. It is supplied with a terminal bolt kit, black ON-OFF operating handle and adjustable shaft as standard, providing a complete operating package for integration into suitable electrical enclosures.

Key Advantages

• Heavy-duty 315 A switch fuse for demanding power distribution applications.
• Four-pole configuration for electrical systems requiring four-pole switching.
• Designed for BS 88 B1–B4 fuse links.
• Mechanism positioned between the poles for compact front operation.
• Fourth pole is switched with a solid link.
• Black ON-OFF handle, adjustable shaft and terminal bolt kit supplied as standard.
• Combines load switching, electrical isolation and fuse protection within a single device.

Key Features

• ABB OS Fuse Switches series.
• 315 A rated operational current.
• Four-pole construction.
• Front-operated switch fuse design.
• Operating mechanism located between the poles.
• British Standard BS 88 fuse system.
• Compatible with B1–B4 fuse links.
• Rated for AC-20 to AC-23 duties at up to 690 V AC.
• 180 kW AC-23 rating at 415 V.
• 220 kW AC-23 rating at 500 V.
• 315 kW AC-23 rating at 690 V.
• Fourth pole configured as switched with solid link.
• Black ON-OFF operating handle and adjustable shaft included.
• Handle is IP65 protected, padlockable in the OFF position and provides door interlocking in the ON position.

Reliable Switching and BS88 Fuse Protection

Switch fuses combine manual load switching and electrical isolation with the overcurrent and short-circuit protection provided by correctly selected fuse links. This enables downstream circuits and equipment to be isolated for operation or maintenance while suitable BS 88 fuse links provide dependable protection against electrical fault conditions.

The ABB OS range provides robust switching solutions for industrial electrical distribution. The OS315B22N2P combines a 315 A four-pole configuration, BS 88 B1–B4 fuse compatibility and a mechanism positioned between the poles, while its included operating handle and adjustable shaft provide a complete solution for integration into switchboards and electrical enclosures.

Typical Applications

• Industrial low-voltage distribution boards.
• Electrical switchboards and power distribution panels.
• Four-pole feeder switching, isolation and fuse protection.
• Industrial machinery power supplies.
• High-current equipment distribution circuits.
• Commercial and industrial electrical distribution systems.