The switch disconnects the supply from the heater element and gives the person working on the water heater control of the supply. Where the duties of an isolator are to make and/or break a circuit under load, it is usually marked with a symbol to indicate its switching capability.Ī similar situation arises where, typically, a double-pole switch is installed next to an immersion heater as shown in Fig 3. Regulation 537.3.2.2 requires that devices used for the function of switching off for mechanical maintenance shall be inserted in the main supply circuit and be capable of cutting off the full-load current of the relevant part of the installation. However, in recent editions/amendments of BS 7671, no regulatory requirements giving such a distance are now stated. Historically, this was generally achieved by locating the cooker control switch within 2 m of the cooking appliance as shown in Fig 2. Consideration should also be given as to whether the position of the device enables it to remain readily accessible in the event of a cooking fire. The means of interrupting the supply on load should be readily accessible but the device should not be positioned where, in order to access it, a person would have to reach over the cooking appliance. Located so that it is continuously under the control of the person undertaking the maintenance task. Great care must be taken, in the design and implementation of measures for switching off for mechanical maintenance, to ensure that safe working conditions are provided, particularly where non-electrically skilled persons are likely to be undertaking the maintenance.įor example, a cooker switch can perform the function of switching off for mechanical maintenance, providing the switch is UKCA Packaging and Packaging Waste Directive: UK SI 2013 No.Switching off for mechanical maintenance is provided for the benefit of persons who are not necessarily electrically skilled and who may not necessarily be competent to avoid the dangers which electricity may create.UKCA RoHS Statutory Instruments: UK SI 2012 No.UKCA LVD Statutory Instruments: UK SI 2016 No.CE Packaging and Packaging Waste Directive: 94/62/EC.For cleaning / polishing of products, use only a soft, dry, clean cloth.Suitable and matches both the Deco white range and Metal Clad range.Bare earth cables must always be covered with appropriate sleeving and wired to the earth terminal.Ensure that the mains supply is isolated before commencing installation and refer to the circuit diagram with the relevant product.Operational Temperature (☌): -5 to +40.Product Marking: On, Off Fan Isolator + Lock.Minimum Back Box Depth (mm): 25 (35 Flat Plate).Terminal Capacity - Solid (mm²): 4 x 1.5 or 2 x 2.5.Contacts: Silver "on-lay" Copper / Brass.Terminal Screws: Steel & Yellow Passivated.They are also fully interchangeable, so you can enjoy the flexibility of customisable switching solutionsĬlick's MiniGrid range features a wide variety of White modules, including everything from fan isolators to dimmer switchesĬlick MiniGrid MD220WH 10A 3 Pole Fan Isolator Switch Lockable Module White Mounting these switches on Click MiniGrid plates is quick and easy, thanks to their simple single screw fixing. The Click MiniGrid MD220WH 10A 3 Pole Fan Isolator Switch Module Lockable White is part of Click's diverse range of eye-catching MiniGrid modules.
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