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MERSEN FUSE IEC UL508 Switch 80A 3p M803

MERSEN FUSE IEC UL508 Switch 80A 3p M803

Mersen M803 UL508 non-fused disconnect switch with an 80 A current rating, 600 V AC rating and three-pole configuration for industrial motor isolation and electrical switching.

SKU: M803MPN: M803
Price
List Price £86.65 ex VAT
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£86.65
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Why Choose the Mersen M803 UL508 Non-Fused Disconnect Switch?

The Mersen M803 is a compact and robust UL508 non-fused disconnect switch designed for safe isolation and switching of low voltage electrical circuits. Rated at 80 A with a three-pole configuration, it is suitable for industrial control panels, OEM machinery, motor disconnect applications and electrical distribution systems.

As part of Mersen's proven M-Series disconnect switch range, the M803 combines reliable switching performance with an extremely compact footprint. Its industrial-grade construction allows it to make and break loads up to 600 V AC, while offering multiple mounting options including direct screw, DIN rail and door mounting accessories.

Designed for panel builders, machine manufacturers and industrial maintenance engineers, the M803 provides dependable manual isolation, helping improve operator safety while ensuring compliance with recognised electrical installation standards.

Key Advantages

  • Compact 80 A UL508 non-fused disconnect switch.
  • Three-pole configuration for three-phase systems.
  • Suitable as a motor disconnect switch.
  • Capable of switching loads up to 600 V AC.
  • Multiple mounting options for installation flexibility.
  • Robust industrial construction for long service life.

Key Features

  • Mersen M-Series disconnect switch.
  • 80 A current rating.
  • 600 V AC rated voltage.
  • Three-pole design.
  • UL508 listed and IEC 60947-3 compliant.
  • Direct screw mounting as standard.
  • Padlockable operating mechanism.
  • Compact industrial design with silver-plated double-break contacts.

Reliable Isolation for Industrial Control Systems

The Mersen M803 is designed to safely disconnect electrical power for maintenance and servicing while providing dependable switching performance during normal operation. Its compact size makes it ideal for control panels where installation space is limited.

Its durable construction, padlockable handle options and flexible mounting accessories make it a popular choice for OEM machinery, industrial automation and commercial electrical installations.

Typical Applications

  • Industrial control panels.
  • Motor disconnect applications.
  • OEM machinery.
  • Electrical switchboards.
  • Manufacturing equipment.
  • Commercial electrical distribution systems.

Technical Specifications

Current 80 A
Phase Three Phase
Manufacturer Mersen
Series M-Series Disconnect Switches
Model M803
Product type UL508 Non-Fused Disconnect Switch
Rated operational current 80 A
Rated voltage 600 V AC
Number of poles 3
Mounting type Direct screw mounting
Standards UL508, IEC 60947-3
Suitable for Motor disconnect and electrical isolation
HS Code 85363090
Country of Manufacture Finland
Poles 3-pole
Device Type Fuse link
Voltage 600 V

Frequently Asked Questions

What is the Mersen M803 used for?

The M803 is a non-fused disconnect switch used to safely isolate electrical circuits and disconnect motors or equipment during servicing.

What is the current rating of the M803?

The M803 has a rated operational current of 80 A.

What voltage is the switch rated for?

The switch is rated for operation on systems up to 600 V AC.

How many poles does the M803 have?

The M803 features a three-pole configuration suitable for three-phase electrical installations.

Can the M803 be used as a motor disconnect?

Yes. The M803 is suitable for use as a motor disconnect switch in accordance with its UL508 approval.

Trusted by Electrical Professionals Worldwide

Mersen disconnect switches are trusted by panel builders, OEM manufacturers and industrial electricians for reliable circuit isolation, compact installation and dependable switching performance.

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