MERSEN FUSE IEC UL508 Switch 40A 3p M403

Why Choose the UL508 Switch 600VAC Non-Fused 40A 3-Pole Direct Screw Mount?

Engineered for demanding industrial applications, this UL508 compliant switch handles up to 600VAC and 40A across three poles, ensuring reliable circuit isolation and safety in electrical panels. Its direct screw mount design simplifies installation, reducing assembly time and ensuring a secure, vibration-resistant fit.

Non-fused construction provides dependable switching performance where separate circuit protection is present, while robust terminals support consistent, high-current connections. Ideal for OEMs seeking a durable, cost-effective switching solution in control and distribution systems.

Product Code: M403

Key Benefits

• UL508 compliant for assured safety and performance in industrial environments.
• Non-fused design allows flexibility with external circuit protection.
• Direct screw mount enables quick and secure installation.
• Supports up to 600VAC and 40A across three poles for versatile applications.
• Compact dimensions (35.1 mm width x 54.1 mm length x 45 mm height) save panel space.
• Robust box-type terminals ensure reliable electrical connections.
• High torque rating (0.791 Nm) for secure terminal fastening.

Compatibility

This switch is compatible with control panels and distribution systems requiring UL508 standard components. It supports wiring ranges from #18 to #8 and is suitable for integration with Class J and RK5 fuses for enhanced short circuit protection.

Applications

• Industrial motor control and protection circuits.
• Electrical distribution panels in commercial and industrial facilities.
• OEM machinery requiring reliable non-fused switching solutions.
• Control systems requiring compact, high-amperage circuit isolation.
• Replacement or upgrade of existing UL508 compliant switchgear.

Technical Specifications

• Item number: M403
• Description: UL508 Switch 600VAC Non-Fused 40A 3-Pole Direct Screw Mount
• EAN/UPC Code: 3605340557435
• Rated voltage AC UL: 600 V
• Ampere Rating: 40 A
• RoHS Compliant: Yes
• AC or DC: AC
• Short Circuit Current Rating (SCCR): Up to 100 kA with fuses
• Short Circuit Rating (Class J): 10 kA w/60A kA
• Short Circuit Rating (Class RK5): 5 kA w/60A kA
• Number of Poles: 3-Pole
• Wiring range: #18-8
• Connection/Terminal Type: Box
• Torque Rating: 0.791 Nm
• Max Horsepower Rating/FLA: 3-Phase: 240V 10HP, 480V 20HP, 600V 25HP; 1-Phase 120V 2HP, 240V 5HP
• Rated Insulation Voltage: 750 V
• Installation Mounting: Direct Screw Mount
• Product Width: 35.1 mm
• Product Length: 54.1 mm
• Product Height: 45 mm
• Sell Pack Quantity: 1 EA
• Sell Pack Weight: 0.1134 kg
• Sell Pack Width: 67.1 mm
• Sell Pack Length: 46 mm
• Sell Pack Height: 79 mm
• Product group: UL/CSA Switches
• Product Weight: 0.1089 kg

Common Search Terms

UL508 switch, 600VAC switch, 40A non-fused switch, 3-pole electrical switch, direct screw mount switch, industrial control switch, circuit isolation switch, OEM electrical components