Mersen HR274 red 274 mm external operating handle, reference G1043401, with IP65 and NEMA 3R ratings for compatible Mersen low-voltage disconnect switches.
£140.10
The Mersen HR274 is a heavy-duty external front-operated disconnect switch handle designed for use with compatible Mersen low-voltage disconnect switches. Its substantial 274 mm length provides increased leverage and a secure grip when operating larger switch mechanisms in industrial switchboards, machinery and electrical power distribution equipment.
Featuring a highly visible red finish, the HR274 allows the connected disconnect switch to be operated from outside the electrical enclosure. This supports clear identification of the isolation control while allowing the enclosure door to remain closed during normal switch operation.
When correctly fitted with the appropriate Mersen disconnect switch, operating shaft and mounting components, the HR274 provides an IP65 and NEMA 3R rated installation. Its robust construction makes it suitable for demanding industrial environments where reliable switching, secure isolation and positive manual operation are required.
Disconnect switches provide a controlled means of isolating machinery and electrical equipment from an incoming power supply. An external operating handle enables the connected switch to be moved between its operating positions while the electrical enclosure remains closed.
The extended length of the Mersen HR274 provides additional leverage for operating compatible switch mechanisms. When correctly installed with the appropriate shaft and enclosure components, it delivers dependable manual control for industrial electrical isolation applications.
| IP Rating | IP65 |
|---|---|
| Manufacturer | Mersen |
| Model | HR274 |
| Manufacturer reference | G1043401 |
| Product type | Disconnect switch operating handle |
| Accessory type | External operating handle |
| Operating position | External front operation |
| Handle colour | Red |
| Handle length | 274 mm |
| Protection rating | IP65 |
| NEMA rating | NEMA 3R |
| Operating method | Manual |
| Application | Low-voltage disconnect switch operation |
| Mounting arrangement | Enclosure mounting with a compatible operating shaft |
| Accessory supplied | External operating handle |
| Operating shaft included | No |
| Disconnect switch included | No |
The Mersen HR274 is an external red operating handle used to control a compatible Mersen low-voltage disconnect switch from outside an electrical enclosure.
No. The HR274 is an external operating handle accessory. The compatible disconnect switch, operating shaft and required mounting components must be selected separately.
The HR274 has a nominal handle length of 274 mm, providing increased leverage for operating compatible disconnect switch mechanisms.
The HR274 is specified with IP65 and NEMA 3R ratings when correctly installed as part of a suitable enclosure and disconnect switch assembly.
The HR274 is designed for selected Mersen low-voltage disconnect switches. Compatibility depends on the switch model, operating shaft and enclosure arrangement, so all components should be checked before installation.
Mersen disconnect switch handles are used by electrical engineers, machinery manufacturers and panel builders to provide dependable external switching and isolation in demanding industrial electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...