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FAQs

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

From its own case: coil voltage, contact rating, configuration and pin layout are printed on virtually every relay, and the socket's pin pattern confirms the footprint. Match the markings like-for-like; where heat has cooked the printing off, a photograph of the relay and socket via Ask Simon identifies it.

Test before buying: a commanded relay clicks — silence points at its feed, earth or the switch upstream, while a click with no output points at burnt contacts. The two-minute conviction is the swap test: exchange it with an identical neighbour and see whether the fault follows the relay or stays with the circuit.

Because the relay is the messenger: contacts that burn repeatedly are switching more current than rated — an overloaded circuit, a chafed short, a seized motor downstream — and each new relay inherits it. After the second identical failure, measure the circuit's actual draw; the answer is upstream of the socket.

No — coil voltage is absolute: a 12V coil on 24V burns out, a 24V coil on 12V never pulls in reliably. Mixed-voltage fleets keep both in stock for exactly this reason, and the voltage is the first marking checked, every time, before the pattern or the pins.

Returns are accepted within 30 days of purchase, in original packaging, on orders delivered within the United Kingdom. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will typically arrange collection and replacement at no cost to you. For parts that don't fit your machine, the Fit Guarantee covers a hassle-free return at no cost. For buyer's remorse — you've changed your mind or ordered the wrong item, email us first to obtain a Return Merchandise Number; a restocking fee may apply. Refunds are issued to the original payment method once the return is inspected.

Relay

Relays are the switchgear of machinery electrics: the small electromagnetic and solid-state switches that let a dashboard button command a headlamp's current, scattered through every loom on every machine the catalogue serves. PartsForMachines supplies relays by pattern, rating and function, within the electrical components family the WAI, AS-PL and Hella brand ranges anchor. The buying language is the relay's printed self: coil voltage, 12V and 24V never interchangeable, contact rating in amps, the configuration, normally-open make relays, changeovers, and the micro and mini footprints whose pin layouts the sockets dictate, plus the specialist patterns machinery runs, flasher units, glow plug and timer relays, latching types, all listed per product and read straight from the failed relay's case. Matching is therefore the easiest in electrics: like-for-like by the markings, with Ask Simon resolving relays whose printing has cooked off. The diagnosis honesty saves parts: relays click audibly when commanded, so a silent relay suspects its feed and earth before itself, a clicking relay with no output suspects its contacts, and the swap test with a known-good neighbour of the same pattern convicts in seconds. The protective note is the circuit's: a relay that burns repeatedly is reporting an overloaded or shorted circuit, and the third identical failure deserves an ammeter, not a fourth relay. Solenoids, sensors and the electrical family sit alongside. For pattern identification from a photograph, contact the team via WhatsApp 07754288583.