2CSM277982R1801 ABB E91N50 E 91N/50 Fuse Holder 1P+N 50 A 14 x 51 mm

Why Choose the ABB E91N50 Fuse Holder?

The ABB E91N50, also designated E 91N/50, is a robust 1P+N cylindrical fuse holder / fuse disconnector designed for protection and isolation in low-voltage electrical installations. As part of the ABB E 90/50 range, it provides a practical solution for integrating cylindrical fuse protection into single-phase circuits with a switched neutral.

Designed for 14 × 51 mm cylindrical fuse links, the E 91N/50 has two poles with one protected fuse pole and a concurrently switched neutral conductor. Its modular DIN-rail construction makes it straightforward to integrate into distribution boards, industrial control panels and electrical switchgear.

With a rated current of 50 A and a rated operational voltage of up to 690 V AC/DC, the E91N50 is suitable for demanding low-voltage applications. The device can also be locked in the open position, supporting safe circuit isolation during servicing and maintenance.

Key Advantages

• Compact 1P+N fuse holder / fuse disconnector for low-voltage circuits.
• 50 A rated current for industrial and commercial installations.
• Designed for standard 14 × 51 mm cylindrical fuse links.
• 690 V AC/DC rated operational voltage.
• Concurrently switched neutral conductor for 1P+N applications.
• Lockable DIN-rail design supports safe electrical isolation during maintenance.

Key Features

• ABB E 90/50 fuse disconnector range.
• 1P+N configuration with two poles and one protected pole.
• 50 A rated current.
• 690 V AC/DC rated operational voltage.
• Compatible with 14 × 51 mm cylindrical fuses.
• AC-20B utilisation category.
• Three-module width for modular DIN-rail installations.
• IP20 protection rating.
• Lockable open position for safer maintenance.
• Standard version without blown-fuse indicator.

Reliable Fuse Protection and Circuit Isolation

Cylindrical fuse holders provide a convenient way to integrate replaceable fuse links into low-voltage electrical circuits. When fitted with a correctly selected 14 × 51 mm fuse link, the ABB E91N50 supports effective circuit protection while its switching mechanism provides practical isolation for servicing and maintenance.

The 1P+N arrangement is particularly suitable for single-phase circuits where the neutral conductor needs to be switched concurrently with the protected phase. Its modular DIN-rail construction and lockable design make the E91N50 suitable for distribution, control and industrial electrical systems.

Typical Applications

• Single-phase electrical distribution circuits.
• Industrial control and automation panels.
• Commercial electrical distribution boards.
• Machinery and production equipment.
• Power and auxiliary circuits requiring switched neutral isolation.
• Low-voltage circuit protection and isolation systems.