DIN Rail Thermal Aerosol Fire Extinguisher — 20 g

A DIN rail thermal aerosol fire extinguisher is a compact, single-use device designed to suppress fires inside electrical enclosures. It activates through heat or direct flame and releases a fire-suppressing aerosol without requiring an external power supply. The NEWLINK range includes 10g, 20g and 30g models with DIN rail and adhesive mounting options.

The device is intended for relatively enclosed spaces such as distribution boards, meter boxes, industrial control cabinets and machine electrical compartments. Suitability depends on the enclosure volume, ventilation, internal partitions, operating conditions and fire hazards. Share your cabinet dimensions and interior photos so we can review the application before recommending a model.

Start with the cabinet’s internal volume and then check the installation conditions.

Calculate the internal volume as length × width × height, using metres. These values are selection references for suitable enclosure conditions. Ventilation, openings and separated compartments must also be considered; agent weight alone does not establish suitability.

A larger cabinet requires an application review before selecting the quantity and positions of the devices. Internal partitions may prevent aerosol from reaching every compartment, and separately triggered devices may not activate simultaneously. Do not assume that adding the stated protection volumes automatically establishes coverage for a larger enclosure.

No external electrical supply or battery is required for the thermal activation version. It operates independently of a fire alarm panel. The blue leads are thermal sensing cords, not electrical connection wires, and must not be connected to cabinet terminals. Applications requiring remote activation or alarm feedback need a separately specified solution.

The thermal sensing cords initiate activation when exposed to direct flame or the specified activation temperature of 170°C. Activation starts the internal aerosol-generating reaction. The released aerosol suppresses combustion by interfering with the chemical reactions that sustain the flame. Actual response depends on heat reaching the sensing cords.

No. Aerosol release duration is not a guaranteed time from ignition to complete extinguishment. The supplied TDS states ≤6 seconds, while the FAQ and working-principle text state ≤30 seconds. The applicable value remains under review; no final duration is presented here. Actual performance depends on the fire, enclosure conditions and installation.

The device supports attachment to a compatible 35 mm DIN rail or adhesive mounting on a suitable enclosure surface. Obtain the model-specific installation instructions and clearance requirements before installation.

Check that the mounting surface is clean, dry, stable and compatible with the adhesive. Remove dust and grease, peel off the protective liner, and press the device firmly into place according to the adhesive instructions. Confirm that closing the cabinet door will not compress the device or its sensing cords. Consider temperature, vibration and door movement when choosing the mounting position.

Ventilated cabinets and outdoor installations need a separate suitability assessment. Airflow and large openings can allow aerosol to escape, while moisture and weather exposure can affect the installation. Do not assume outdoor suitability from the operating temperature range alone. Provide details of the enclosure sealing, ventilation and environmental exposure for review.

The device is single-use and must be replaced after activation. The supplied TDS and FAQ state 10 years, while the installation document states 3 years. The applicable replacement interval must be confirmed for the exact model and batch before use.

No. Service life does not remove the need to check the installation. Periodic checks should confirm that the device remains securely mounted, the sensing cords are intact, and the discharge area is unobstructed. Cabinet modifications, additional equipment or changes to ventilation may require the protection arrangement to be reviewed.

Aerosol contains fine particles, so it should not be described as completely residue-free. Applications involving sensitive electronics require a review of the relevant test data, equipment compatibility and post-discharge cleaning requirements. After activation, have the affected equipment assessed before returning it to service.

Ask for the current technical datasheet, installation instructions, applicable test reports and certificates, and SDS/MSDS and transport documentation where relevant. Confirm that the documents cover the exact model and agent formulation being purchased. Requirements for a particular market or project should be reviewed before the order is confirmed.

NEWLINK supports OEM enquiries for product labels and packaging. Please provide your required models, quantities, artwork and destination market so we can confirm the available options, minimum order quantity, sample arrangements and lead time. Custom labels should retain the required product identification and safety information.

Please provide the cabinet’s internal dimensions, interior photos, ventilation details, operating environment, preferred mounting method and required quantity. Include the destination country and any project-specific documentation requirements. These details help NEWLINK review model suitability and prepare a quotation.

Need help selecting a model?
Send your cabinet dimensions and photos to [email protected] for an application review and quotation.