The nVent HOFFMAN DAHHL4001A is a high-performance hazardous location enclosure heater designed to protect electrical equipment from low temperatures, condensation and corrosion in demanding industrial environments. As part of the advanced nVent HOFFMAN hazardous location heater range, it provides reliable thermal management for enclosures containing sensitive electrical and instrumentation components.
This finned convection heater transfers heat to the surrounding air, creating a natural convection current that helps maintain stable enclosure temperatures. The DAHHL4001A is specifically designed for hazardous area applications where reliable protection of electronic components, measuring instruments and control equipment is required.
With a rated heating output of 400 W and a 120 VAC nominal supply, the DAHHL4001A provides effective freeze protection and condensation control for industrial cabinets and small enclosures. Its black anodised aluminium construction provides durable performance in demanding environments.
400 W heating capacity for effective thermal protection.
120 VAC operation for industrial electrical applications.
Helps prevent condensation, corrosion and freezing conditions.
Black anodised aluminium construction for durable operation.
Suitable for hazardous areas requiring reliable enclosure heating.
Key Features
nVent HOFFMAN hazardous location heater series.
Model: DAHHL4001A.
400 W rated heating power.
120 VAC nominal voltage.
Convection heating design using finned heater technology.
Black anodised aluminium material.
Designed for hazardous area enclosure applications.
Provides freeze protection down to -60 °C.
Requires a suitable thermostat for controlled operation.
Reliable Thermal Protection for Hazardous Area Systems
Enclosure heaters such as the nVent HOFFMAN DAHHL4001A help maintain reliable operation of electrical and instrumentation equipment by reducing the risk of condensation and temperature-related failures. Stable internal temperatures are essential for protecting sensitive components in industrial installations.
The DAHHL4001A is designed for industrial engineers, panel builders and automation specialists working with hazardous area equipment. Its convection heating design provides effective heat distribution while supporting dependable enclosure climate management.
Typical Applications
Hazardous area electrical enclosures.
Industrial instrumentation cabinets.
Control valves and process equipment protection.
Measurement and analysis equipment enclosures.
Oil, gas and chemical processing environments.
Industrial automation systems requiring freeze protection.
Technical Specifications
Country of Manufacture
Germany
Manufacturer
nVent HOFFMAN
Product type
Hazardous location enclosure heater
Model
DAHHL4001A
Heating capacity
400 W
Nominal voltage
120 VAC
Voltage range
108–132 VAC
Heating type
Convection
Material
Black anodised aluminium
Temperature classification
T3
Protection rating
IP66 / IP68
Dimensions (H × W × D)
approx. 225 × 229 × 60 mm
Application
Hazardous area enclosure heating
Frequently Asked Questions
What is the nVent HOFFMAN DAHHL4001A used for?
The DAHHL4001A is a hazardous location heater designed to protect electrical and instrumentation equipment from freezing temperatures, condensation and corrosion.
What heating power does this heater provide?
The nVent HOFFMAN DAHHL4001A provides a rated heating output of 400 W.
What supply voltage does the DAHHL4001A require?
The heater operates from a 120 VAC nominal supply with an operating range of 108–132 VAC.
What protection rating does this heater provide?
The DAHHL4001A provides IP66 / IP68 protection and is designed for hazardous location applications.
Does this heater require a thermostat?
The DAHHL4001A requires a suitable thermostat or temperature controller for controlled enclosure heating operation.
Trusted by Industrial Engineers Worldwide
nVent HOFFMAN hazardous location heaters are used by engineers and industrial specialists worldwide to provide reliable thermal protection for critical electrical and instrumentation equipment.
Country of Manufacture
Germany
Manufacturer
nVent HOFFMAN
Product type
Hazardous location enclosure heater
Model
DAHHL4001A
Heating capacity
400 W
Nominal voltage
120 VAC
Voltage range
108–132 VAC
Heating type
Convection
Material
Black anodised aluminium
Temperature classification
T3
Protection rating
IP66 / IP68
Dimensions (H × W × D)
approx. 225 × 229 × 60 mm
Application
Hazardous area enclosure heating
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
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Common questions about our products and support
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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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...