Gas Interlock System – Current Sensing | Best-in-Class Safety Solution

Our new design Gas Interlock System is engineered to provide reliable, cost-effective, and fully compliant gas safety control for commercial kitchens and industrial environments. With 1 or 2 fan monitoring (up to 15A) and built-in current sensors, this unit complies with BS6173 and is an excellent alternative to the Merlin CT1200.

Compact, robust, and simple to install, this gas interlock system is designed for both small establishments and large-scale installations, ensuring that gas appliances only operate when adequate ventilation is in place.

Key Benefits of Choosing Under Control Gas Interlock Systems

• ✅ Best-in-class performance – designed to meet and exceed BS6173 standards.

• ✅ Compact size – just 85 x 48 x 134mm (L x W x H), saving valuable panel space.

• ✅ Wide control range – 0.25A to 15A to suit most canopy and extraction fans.

• ✅ Simple installation & commissioning – straightforward setup with clear wiring options.

• ✅ Cost-effective – a more affordable solution compared to leading alternatives.

• ✅ Versatile – ideal for commercial kitchens, schools, restaurants, and industrial facilities.

What is a Gas Interlock System?

A gas interlock system (or gas safety shut-off system) is a mandatory safety mechanism in many commercial kitchens and gas-powered facilities. Its role is to prevent the release of hazardous gases by ensuring that:

• Gas appliances only operate when the extraction fans are running.

• Gas flow is automatically shut off in the event of fan failure or unsafe operating conditions.

• Operators are alerted to unsafe conditions via both visual and audible alarms.

This prevents gas leaks, fires, and exposure to harmful fumes, protecting both staff and property.

How It Works

1. Fan Current Monitoring – Built-in sensors continuously monitor the electrical current of canopy fans to verify operation.

2. Intelligent Control Panel – Processes input from fans and controls gas solenoid valves.

3. Set Points – Adjustable fan current set points ensure appliances only run with sufficient airflow.

4. Automatic Shut-Off – If fan speed drops below the set threshold, the system cuts off the gas supply via solenoid valves.

5. Safety Alarms – Provides both visual indicators and audible warnings to alert staff immediately.

Applications

• Commercial kitchens (restaurants, hotels, schools, canteens)

• Catering environments with gas-powered ovens, fryers, and ranges

• Industrial and laboratory facilities requiring gas safety interlock solutions

Technical Specifications

• Monitoring: 1 or 2 fans, up to 15A

• Control Range: 0.25A – 15A

• Voltage: 230V AC

• Dimensions: 85 x 48 x 134mm (L x W x H)

• Compliance: BS6173, CE marked

• Installation: Easy wiring with simplified single-phase and three-phase options

Compatible Products

We also supply a full range of Gas Solenoid Valves, Fan Speed Controllers, Inverters, and Emergency Stop Buttons, allowing you to build a complete, compliant safety kit for your commercial kitchen or facility.