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MERSEN FUSE Handle black274mm IP65 NEMA 3R HB274
Mersen HB274 black 274 mm external front-operation pistol handle for compatible M800 series disconnect switches, with IP65 and NEMA Type 1, 3R and 12 protection.
£105.08
Why Choose the Mersen HB274 External Operating Handle?
The Mersen HB274 is a heavy-duty external front-operation pistol handle designed for compatible Mersen M800 series low-voltage disconnect switches. With a substantial 274 mm handle length, it provides the leverage and secure grip required for dependable operation of high-current disconnect switch assemblies.
Designed for mounting on the exterior of an electrical enclosure, the HB274 allows the associated disconnect switch to be operated without opening the panel door. This supports safer circuit isolation during normal operation, maintenance and servicing while helping protect personnel from internal electrical equipment.
The handle features a durable black construction combining PA66/6 engineering polymer and stainless steel components. When correctly installed with compatible equipment, it provides IP65 protection and meets NEMA Type 1, 3R and 12 enclosure requirements, making it suitable for demanding industrial control and power distribution applications.
Key Advantages
- Genuine Mersen external disconnect switch handle.
- Designed for compatible Mersen M800 series switches.
- 274 mm pistol-style handle provides excellent leverage.
- Allows safe switch operation from outside the enclosure.
- IP65 and NEMA Type 1, 3R and 12 protection when correctly installed.
- Robust construction for demanding industrial environments.
Key Features
- Mersen low-voltage disconnect switch accessory.
- External front-operation configuration.
- Compatible with selected M800 series disconnect switches.
- 274 mm pistol-style operating handle.
- Black industrial finish.
- PA66/6 and stainless steel construction.
- IP65 environmental protection.
- NEMA Type 1, 3R and 12 rated when correctly assembled.
Safe External Operation for High-Current Switchgear
External operating handles enable disconnect switches mounted within electrical cabinets to be controlled without exposing the operator to internal components. The Mersen HB274 provides a clear and dependable manual interface for switching compatible M800 series assemblies between their operating positions.
Its extended pistol-style design provides greater gripping force and operating leverage, making it especially suitable for larger disconnect switches. When paired with the correct switch, shaft and mounting accessories, the HB274 supports a robust isolation system for industrial machinery and electrical distribution equipment.
Typical Applications
- Industrial power distribution panels.
- Main electrical switchboards.
- Motor control centres.
- OEM machinery and production equipment.
- High-current electrical isolation systems.
- Industrial control cabinets and enclosures.
Technical Specifications
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| IP Rating | IP65 | |
|---|---|---|
| Device Type | Accessory | |
| Manufacturer | Mersen | |
| Model | HB274 | |
| Product type | External disconnect switch operating handle | |
| Handle style | Pistol type | |
| Operating arrangement | External front operation | |
| Compatible range | Selected Mersen M800 series disconnect switches | |
| Handle length | 274 mm | |
| Width | Approximately 69.4 mm | |
| Height | Approximately 80 mm | |
| Colour | Black | |
| Material | PA66/6 and stainless steel | |
| Protection rating | IP65 | |
| NEMA rating | Type 1, 3R and 12 |
Frequently Asked Questions
What is the Mersen HB274 used for?
The Mersen HB274 is used to operate a compatible Mersen M800 series disconnect switch externally from the front of an electrical enclosure.
What is the length of the Mersen HB274 handle?
The HB274 has a nominal handle length of 274 mm, providing increased leverage for operating larger disconnect switches.
What environmental protection does the HB274 provide?
When correctly installed with compatible equipment, the handle provides IP65 protection and meets NEMA Type 1, 3R and 12 requirements.
Is the HB274 a complete disconnect switch?
No. The HB274 is an external operating handle. The compatible disconnect switch, operating shaft and any required mounting accessories are supplied separately unless included in a complete assembly.
Where is the Mersen HB274 typically installed?
It is commonly mounted on industrial switchboards, motor control centres, machinery enclosures and power distribution cabinets requiring safe external circuit isolation.
Trusted by Panel Builders Worldwide
Mersen disconnect switch handles and accessories are specified by panel builders, OEM manufacturers and electrical engineers for dependable operation, robust construction and safe circuit isolation in demanding industrial installations.
