nVent HOFFMAN EFR201 fixed normally open thermostat with +35 °C switching temperature designed for controlling enclosure cooling devices and alarms.
£23.10
The nVent HOFFMAN EFR201 is a fixed temperature normally open (NO) enclosure thermostat designed to automatically control cooling devices and high-temperature alarm equipment inside electrical panels. As part of the reliable nVent HOFFMAN EFR thermostat series, it provides accurate temperature switching, simple installation and dependable thermal management for industrial enclosures.
This thermostat uses a thermostatic bimetal sensor element with a pre-set switching temperature, preventing unauthorised adjustment while ensuring consistent operation. The compact design includes a mounting clip for direct installation on a 35 mm DIN rail, making it ideal for control cabinets, automation panels and electrical enclosures.
With a normally open contact and a fixed switch-on temperature of +35 °C, the EFR201 is suitable for controlling filter fans, cooling equipment or temperature warning devices. Its IP20 protection rating and robust UL94V-0 plastic construction provide reliable operation inside protected electrical enclosures.
The nVent HOFFMAN EFR201 thermostat helps maintain safe enclosure operating conditions by automatically activating connected cooling equipment when the internal temperature reaches the fixed set point. This reduces the risk of overheating and supports improved reliability of electrical components.
Designed for industrial control panels and automation systems, the EFR series provides dependable temperature management through simple mechanical switching technology. Its fixed setting helps maintain consistent performance while preventing unauthorised changes to thermal protection settings.
| Country of Manufacture | Germany |
|---|---|
| Manufacturer | nVent HOFFMAN |
| Series | EFR Fixed Thermostats |
| Model | EFR201 |
| Product type | Fixed temperature thermostat |
| Contact type | Normally open (NO) |
| Application | Cooling devices and temperature alarms |
| Switch-on temperature | +35 °C |
| Switch-off temperature | +25 °C |
| Switch capacity | 250 V AC, 5 (1.6) A |
| Additional switching capacity | 120 V AC, 10 (2) A; 24 V DC, 30 W |
| Maximum starting current | 16 A AC for 10 seconds |
| Operating temperature | -40 °C to +80 °C |
| Protection rating | IP20 |
| Material | UL94V-0 rated plastic |
| Connection | 2-pole terminal for 2.5 mm² conductor |
| Mounting type | 35 mm DIN rail clip mounting |
| Finish | Light grey |
| Dimensions (H × W × D) | 47 × 33 × 33 mm |
| Weight | 0.05 kg |
The EFR201 is used to control enclosure cooling devices such as filter fans or temperature alarm equipment when a fixed temperature level is reached.
The EFR201 features a normally open (NO) contact designed for controlling cooling devices or signal equipment.
The thermostat switches on at approximately +35 °C and switches off at approximately +25 °C.
The thermostat is installed using an integrated mounting clip for 35 mm DIN rail mounting inside electrical enclosures.
The EFR201 has an IP20 protection rating and is designed for installation inside protected electrical cabinets.
nVent HOFFMAN EFR thermostats are trusted by engineers and panel builders worldwide to provide reliable temperature control, efficient cooling management and dependable protection for electrical enclosures.
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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...