Gas Interlock System Current Sensing

Prix habituel £102.00
Prix habituel £96.00 Prix soldé £102.00
Taxes incluses.
Gas interlock system, current sensing, **NEW DESIGN** BEST IN CLASS*** 1 or 2 fans monitoring up to 15A, in-built sensors, complies with BS6173. alt_text
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Gas interlock 5921 close up
Prix habituel £102.00
Prix habituel £96.00 Prix soldé £102.00

Gas interlock system, current sensing, **NEW DESIGN** BEST IN CLASS*** 1 or 2 fans monitoring up to 15A, in-built sensors, complies with BS6173.

Why use a Gas Interlock Panel from Under Control Instruments?

Designed for large or small installations.
Small footprint; size 85x48x134mm (L, W, H) will not take up a lot of space, even in small establishments.
Control range, 0.25 to 15A range will suit most fan sizes
Easy installation and commission.
Cost-effective compared to others.
A great alternative to the Merlin CT1200

What is a Gas Interlock used for?

A gas interlock system, also known as a gas safety interlock system or gas safety shut-off system, is a safety mechanism designed to prevent the release of hazardous gases in commercial or industrial settings. These systems are commonly used in places like commercial kitchens, laboratories, and manufacturing facilities where gas is used for various purposes.

The primary purpose of a gas interlock system is to ensure that gas appliances, such as ovens, stoves, or industrial equipment, are operated safely and that gas is shut off automatically in case of certain hazardous conditions. Here's how a typical gas interlock system works:

1. Current Sensors: The system is equipped with current sensors that continuously monitor the current produced by the fan motors. These sensors can detect the change in fan speed.

2. Control Panel: The gas interlock system has a sophisticated control panel design. This control panel serves as the brain of the system, processing information from the current sensors and managing the gas supply.

3. Set Point: The system can be set to a predetermined set point for minimum fan speed levels. If the fan speed levels fall below this set point, the system will activate an alarm and initiate safety procedures.

4. Shut-Off Valves: Gas interlock systems are typically connected to the main gas supply line. When a hazardous condition is detected, the system can automatically shut off the gas supply by closing gas solenoid valves. This action prevents the gas from flowing into the building or to specific gas appliances.

5. Alarms and Indicators: In the event of a gas leak or other unsafe conditions, the system may trigger audible and visual alarms to alert occupants of the building. These alarms are essential for evacuation and safety purposes.


Gas interlock systems play a crucial role in preventing gas-related accidents, fires, and exposure to harmful gases. They are typically required in many jurisdictions to ensure the safety of personnel and property in locations where gas is used. These systems are part of broader safety regulations and standards for gas handling and are typically installed and maintained by qualified professionals.


We also supply gas solenoid valves, fan speed controllers, inverters, and emergency stop buttons to complete the full kit.

What parts are supplied in a Gas Interlock System used with?

A gas interlock system is used with canopy fans, solenoid valves and fan speed controllers, all of which can be found on our website. Your ventilation engineer should be able to size the correct valve size and fan speed controller rating so they will perform at their optimum levels.

Simplified wiring


Three phase wiring
L1 from terminals 6 & or 7 to the speed controller(s)
L2 and L3 to the speed controller
All other connections are the same as above.

DELIVERY TIMES

All orders, wherever possible are shipped the same day within the UK as long as it is received before 1 pm.

Orders placed on Friday after 1 pm or the weekend will be dispatched on Monday.

PACKAGING & SHIPMENT

  • Great care is take with each order to ensure they are packed securely to prevent any damage in transit.
  • We can ship orders in several boxes depending on quantity, size or types.
  • Each order is shipped with a packing note inside the box and a carrier shipping label on the outside.

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