Relays With Diode

Enhance the reliability of your vehicle’s electrical system with our specialist range of relays with diode protection at Mid Ulster Rotating Electrics in Cookstown, Northern Ireland. These relays include a built-in diode which suppresses voltage spikes generated when the coil is de-energised, protecting sensitive circuits and improving longevity.

Available in both 12 V and 24 V versions, and rated for high-current switching, they are ideal for applications such as lighting circuits, electric fans, pumps and other heavy-duty automotive or agricultural systems. Whether you’re upgrading a standard relay or fitting a new circuit, choose our diode-protected relays for enhanced performance and reliability.

Trust Mid Ulster Rotating Electrics for expert advice, strong stock and fast UK dispatch. Keep your electrical systems safe and efficient.

  • 24V 15A change-over mini relay with built-in diode protection (02-019), moulded plastic bracket and spade terminals for vehicle installations.

    24V 15A Changeover 5 Pin Mini Relay (Diode Protection) CurrentCare 02-019

    Sale

    24V 15A Changeover 5 Pin Mini Relay (Diode Protection) CurrentCare 02-019

    Current Care
    £6.12 inc VAT £5.10 ex VAT
    £8.39 £6.12 inc VAT £5.10 ex VAT
    Sale
  • 24V 20A normally open mini relay with diode protection and moulded plastic bracket, 4-pin automotive style.

    24V 20A Normally Open Contact 4 Pin Mini Relay (Diode Protection) CurrentCare 02-021B

    Sale

    24V 20A Normally Open Contact 4 Pin Mini Relay (Diode Protection) CurrentCare 02-021B

    Current Care
    £5.95 inc VAT £4.96 ex VAT
    £8.39 £5.95 inc VAT £4.96 ex VAT
    Sale
  • 4 Pin Make & Break Relay 12V 40A With Diode Across Coil Cargo 160929 02-020B

    4 Pin Make & Break Relay 12V 40A With Diode Across Coil Cargo 160929 02-020B

    Sale

    4 Pin Make & Break Relay 12V 40A With Diode Across Coil Cargo 160929 02-020B

    Hc-Cargo
    £5.38 inc VAT £4.48 ex VAT
    £7.74 £5.38 inc VAT £4.48 ex VAT
    Sale
  • A black 5 pin change over relay micro mini 12V with resistor from Woodauto.

    5 Pin Change Over Relay Compact Micro Mini 12V 30/40A With Diode Woodauto RLY1311

    Sale

    5 Pin Change Over Relay Compact Micro Mini 12V 30/40A With Diode Woodauto RLY1311

    Current Care
    £7.12 inc VAT £5.93 ex VAT
    £8.16 £7.12 inc VAT £5.93 ex VAT
    Sale
  • black relay switch RLY1018B on a white background

    5 Pin Changeover Relay Switch 12V 40A Mini Diode Terminal Rly1018B CurretCare 02-018B

    Sale

    5 Pin Changeover Relay Switch 12V 40A Mini Diode Terminal Rly1018B CurretCare 02-018B

    Current Care
    £5.54 inc VAT £4.62 ex VAT
    £7.44 £5.54 inc VAT £4.62 ex VAT
    Sale
  • Black relay with copper contacts on a white background

    5 Pin Changeover Relay Switch High Performance With Diode 12V 70A RLY1027 CurrentCare 02-027

    Sale

    5 Pin Changeover Relay Switch High Performance With Diode 12V 70A RLY1027 CurrentCare 02-027

    Current Care
    £7.46 inc VAT £6.22 ex VAT
    £13.50 £7.46 inc VAT £6.22 ex VAT
    Sale
  • A 5 pin changeover relay switch with a diode, typically used in a vehicle's electrical system, displayed against a white background.

    5 Pin Changeover Relay Switch With Diode 24V 20 Amp Lorry Truck RLY1312 CurrentCare 13-012

    Sale

    5 Pin Changeover Relay Switch With Diode 24V 20 Amp Lorry Truck RLY1312 CurrentCare 13-012

    Current Care
    £5.75 inc VAT £4.79 ex VAT
    £8.09 £5.75 inc VAT £4.79 ex VAT
    Sale
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