Haydon HAY-FIRE-ISO Double Pole Fire Isolation Switch | F4A Fuse, 80A Surge Rating
£14.47 (inc VAT: £17.36)
Key features
- Supplied with 2 keys for secure isolation
- Fuse fully disconnects supply in OFF position
- Compact ABS enclosure for easy panel-side mounting
Downloads
Summary
The Haydon HAY-FIRE-ISO gives you a dedicated, lockable mains isolation point for fire alarm panels, letting you cut power safely during servicing, testing or fault-finding without disturbing the panel’s internal wiring.
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Fitting a proper isolation switch ahead of the panel keeps your maintenance visits quicker and safer, and it’s the kind of detail that shows a client you’ve thought about ongoing serviceability, not just the initial install.
The key-locked switch stops anyone reinstating the supply while you’re working, and the fuse arrangement disconnects fully from the supply when switched off, so you know there’s no live feed reaching the panel until you say so.
Features
- Key-locked operation - stops anyone switching the panel supply back on while you’re working
- Double pole switching - isolates both live and neutral for a genuine break in supply
- Fuse fully disconnected when off - confirms no residual connection to the mains feed during maintenance
- F4A fuse rating - matched to typical fire panel power supply loads
- 80A switch surge rating - copes with inrush current when the panel supply is reconnected
- ABS enclosure - lightweight, durable housing suited to surface mounting near the panel
- Supplied with 2 keys - one for site use, one to keep as a spare
FAQ
No, the HAY-FIRE-ISO switches the incoming 100~240Vac mains supply only. If your panel has a separate battery back-up, you’ll need to isolate that separately as part of your safe isolation procedure. When the key switch is in the OFF position, the fuse is fully disconnected from the supply, not just the load side. This gives you a genuine break rather than a fuse sitting live but unpowered. The datasheet doesn’t cite any BS EN 54 approval, and mains isolators of this type generally sit outside that standard’s scope (which covers detection and alarm devices rather than isolation switches). If your project specification requires documented compliance, confirm the applicable standard and certification with Haydon before ordering. The unit has an ABS enclosure but no IP rating is stated on the datasheet, so an ingress protection level shouldn’t be assumed. For plant rooms, outdoor cabinets or any damp environment, check with the manufacturer or fit it inside a suitably rated enclosure. The datasheet describes it as a general double pole mains isolator (100~240Vac, F4A fuse, 80A surge rating) rather than a device specific to fire alarm circuits. It could suit other ancillary mains-switching duties, such as door entry controllers, provided the load’s voltage and current stay within these ratings. The datasheet confirms rear terminals for mains input and switched output and gives the enclosure’s overall size (86 x 86 x 62mm), but it doesn’t specify a minimum cable size or back box type. Check the installation instructions or confirm with the manufacturer before first fix.Does this isolate the battery back-up supply as well as the mains?
What happens to the fuse when the switch is turned off?
Is this isolator certified to BS EN 54, and do I need paperwork for the system records?
Can it be fitted in a plant room or anywhere exposed to damp, or is it strictly indoor use?
Is this only for fire alarm panels, or can it be used to isolate other ancillary equipment?
What cable size and back box does it need on site?
Specifications
| Operating Voltage | 100~240Vac |
|---|---|
| Switch Contact | Double pole (live and negative) |
| Fuse Rating | 230Vac, F4A |
| Switch Surge Rating | 80A |
| Off Position Behaviour | Fuse disconnected from supply when switched off |
| Enclosure Material | ABS |
| Weight | 0.26kg |
| Housing Size | W.86 x L.86 x H.62mm |
| Keys Supplied | 2 |
| Warranty | 3 years |
Downloads
- Datasheet (Adobe PDF)
Additional information
| LED | No |
|---|---|
| Key-positions | |
| Device Type |