USM3 – Mersen | 600V 30A 3P MID ULTSFE

Description

The Mersen USM3 UltraSafe™ 3-Pole Fuse Holder provides reliable, touch-safe protection for 1-1/2″ x 13/32″ midget fuses in high-voltage AC and DC industrial control circuits. Engineered for maximum safety and performance, this compact non-indicator module is rated for applications up to 800 VAC / 1000 VDC and 30 Amperes with an impressive 100 kA short-circuit current rating (SCCR).

Built with IP20 finger-safe protection under IEC and DIN standards, the USM3 ensures complete operator safety during routine maintenance and fuse changes without requiring special tools. Housed in a tough, insulating polyamide casing, this unit saves up to 15% panel mounting space compared to traditional fuse blocks and snaps easily onto standard 35mm DIN rail for rapid assembly. Equipped with heavy-duty pressure plate terminals that accept #6 to #14 AWG solid or stranded wire, the Mersen USM3 is ideal for power distribution, motor branch protection, and solar photovoltaic systems.

Key Features

• Finger-Safe IP20 Design: Fully compliant with IEC and DIN standards to prevent accidental contact with live components during operation and fuse replacement.
• High AC/DC Voltage Ratings: Accommodates electrical systems up to 800 VAC and 1000 VDC at 30 Amperes.
• Space-Saving DIN Rail Mount: Compact 3-pole footprint saves up to 15% panel space and snaps quickly onto standard 35mm DIN rails.
• Robust Wiring Terminals: Pressure plate terminals handle #6 to #14 AWG solid or stranded wire with a 1.695 N·m torque rating.
• Durable Polyamide Housing: Molded from high-grade polyamide for exceptional thermal insulation and mechanical durability.
• Midget Fuse Compatibility: Designed specifically for standard 1-1/2″ x 13/32″ (10 x 38 mm) AC and DC midget fuses.

Specifications