Why Choose the Lovato FB03A3N Fuse Holder?
The Lovato FB03A3N is a durable four-pole cylindrical fuse holder designed for 22 × 58 mm fuse links in industrial power distribution, machinery and electrical control applications. Its 3P+N configuration allows three phase conductors and the neutral conductor to be managed within one coordinated DIN rail mounted device.
Part of the Lovato Electric FB range, the FB03A3N provides a secure and accessible mounting solution for replaceable cylindrical fuses. It is rated at 100 A under IEC requirements and up to 125 A under UL and CSA requirements, making it suitable for demanding low-voltage installations operating at up to 690 V AC.
The FB03A3N occupies four modular spaces and is designed for installation on a standard DIN rail inside an appropriate electrical enclosure. This version is supplied without a blown-fuse status indicator and features simultaneous neutral conductor switching for coordinated isolation of three-phase and neutral circuits.
Key Advantages
- Designed for 22 × 58 mm cylindrical fuse links.
- 3P+N configuration for three-phase and neutral circuits.
- 100 A IEC rated current and up to 125 A under UL and CSA standards.
- Suitable for systems operating at up to 690 V AC.
- Simultaneously switches the neutral conductor.
- DIN rail mounting simplifies installation within control panels.
- IP20 frontal protection for enclosed electrical installations.
- International conformity supports machinery intended for global markets.
Key Features
- Lovato Electric FB series fuse holder.
- Compatible with 22 × 58 mm cylindrical fuses.
- Four-pole, 3P+N arrangement.
- 100 A / 125 A rated current, depending on the applicable standard.
- 690 V AC nominal voltage.
- Simultaneous neutral conductor switching.
- Without optical blown-fuse status indication.
- Four-module modular width.
- Standard DIN rail mounting.
- cUR recognised and CSA certified.
Reliable Three-Phase and Neutral Circuit Protection
The Lovato FB03A3N provides secure mounting and electrical connection for cylindrical fuse links protecting three-phase and neutral circuits. When correctly selected fuses detect an overcurrent or short circuit, they interrupt the affected conductors to help protect cables, switching equipment and connected machinery.
Its coordinated four-pole design is particularly useful in installations where the neutral conductor must be switched together with the three phases. The DIN rail format allows panel builders and maintenance engineers to install, inspect and replace fuses conveniently within industrial distribution boards and control enclosures.
Typical Applications
- Three-phase industrial distribution boards.
- Electrical control panels and switchboards.
- Motor control centres.
- Automated machinery and production equipment.
- OEM machine building applications.
- Industrial automation systems.
- Circuits requiring coordinated three-phase and neutral isolation.
