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MERSEN FUSE IEC UL508 Switch 80A 3p DM M803DM
Mersen M803DM UL508 non-fused door mounted disconnect switch with an 80 A current rating, 600 V AC rating and three-pole configuration for industrial electrical isolation.
£77.31
Why Choose the Mersen M803DM UL508 Non-Fused Door Mounted Disconnect Switch?
The Mersen M803DM is a compact UL508 non-fused disconnect switch engineered to provide safe electrical isolation and dependable load switching in industrial control panels and OEM machinery. Featuring an 80 A current rating, three-pole configuration and a door-mounted (DM) design, it enables convenient front-of-panel operation whilst keeping the switch body safely enclosed within the electrical cabinet.
As part of Mersen's proven M-Series disconnect switch range, the M803DM combines a compact footprint with industrial-grade durability. Designed for applications up to 600 V AC, it is suitable as a motor disconnect and offers reliable performance in demanding industrial environments.
Its door-mounted configuration eliminates the need for a separate operating shaft, simplifying installation while providing safe external operation. The M803DM is ideal for panel builders, machinery manufacturers and maintenance engineers requiring reliable circuit isolation.
Key Advantages
- Compact 80 A UL508 non-fused disconnect switch.
- Door-mounted (DM) configuration for convenient front operation.
- Three-pole design for three-phase electrical systems.
- Suitable for use as a motor disconnect switch.
- Reliable switching up to 600 V AC.
- Industrial-grade construction for long service life.
Key Features
- Mersen M-Series disconnect switch.
- 80 A rated operational current.
- 600 V AC rated voltage.
- Three-pole configuration.
- Door-mounted (DM) version.
- UL508 listed and IEC 60947-3 compliant.
- Suitable for motor disconnect and electrical isolation.
- Compact design with double-break silver-plated contacts.
Safe Door Mounted Isolation for Industrial Equipment
The Mersen M803DM provides reliable manual isolation of electrical circuits while allowing safe external operation through the enclosure door. Its compact design helps maximise panel space without compromising switching performance.
Designed for OEM machinery, industrial automation systems and electrical distribution equipment, the M803DM offers dependable long-term operation with straightforward installation and maintenance.
Typical Applications
- Industrial control panels.
- OEM machinery.
- Motor control centres.
- Electrical switchboards.
- Manufacturing equipment.
- Commercial and industrial power distribution.
Technical Specifications
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| Current | 80 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | Fuse link | |
| Voltage | 600 V | |
| Manufacturer | Mersen | |
| Series | M-Series Disconnect Switches | |
| Model | M803DM | |
| Product type | UL508 Non-Fused Disconnect Switch | |
| Rated operational current | 80 A | |
| Rated voltage | 600 V AC | |
| Number of poles | 3 | |
| Configuration | Door mounted (DM) | |
| Standards | UL508, IEC 60947-3 | |
| Application | Motor disconnect and electrical isolation |
Frequently Asked Questions
What is the Mersen M803DM used for?
The M803DM is a door-mounted non-fused disconnect switch used to safely isolate electrical circuits and disconnect motors or industrial equipment for servicing.
What is the current rating of the M803DM?
The M803DM has a rated operational current of 80 A.
What does the DM designation mean?
The DM version is supplied as a door-mounted disconnect switch, allowing the operating handle to be mounted directly on the enclosure door.
What voltage is the switch rated for?
The switch is suitable for applications up to 600 V AC.
Is the M803DM suitable as a motor disconnect?
Yes. The M803DM is designed for use as a motor disconnect switch in accordance with its UL508 approval.
Trusted by Electrical Professionals Worldwide
Mersen M-Series disconnect switches are trusted by panel builders, OEM manufacturers and industrial electricians for dependable electrical isolation, compact installation and reliable long-term switching performance.
