12V DC 40A SPNO Automotive Relay

Code: N85ED

  • Suits various circuits in the motor industry and hobby market
  • Spade terminals for quick and easy connection without the need for a relay base
  • 40A switching capacity
  • Limited stock may be available in some stores. Call us on 0844 557 6000 to check

Product details

12V DC 40A SPNO Automotive Relay

• Suits various circuits in the motor industry and hobby market
• Spade terminals for quick and easy connection without the need for a relay base
• 40A switching capacity
• Designed for operation on standard 12V automotive power
• Single pole normally open design

Why is an automotive relay different than a standard relay?
Automotive relays are designed for use on a vehicle’s power system. They have spade terminals for quick and easy connections and a large current handling capacity. Use of automotive relays is not exclusive to vehicles. They are also widely used in hobby projects, since they are designed to operate on 12V power systems.

What does single pole normally open (SPNO) do?
A single pole normally open relay is used when you want an incoming current to close or complete a circuit. As the switching current is applied, the break in the circuit is closed and the device can turn on. This relay has a single pole and a single throw.

Why would I use a relay?
There are several advantages to using a relay. You may want to switch a high current to a lower current, for instance controlling some powerful spotlights on your vehicle with a lower powered switch.
You can use a SPNO relay to cut power to an area when you don’t need the circuit working, either as a safety measure or to conserve power.
Coil Voltage 12 DC
Rating load (resistive) 40 A
Maximum switching power 480 W
Maximum switching voltage 14V DC
Minimum switching current/voltage 40 A
Maximum make current 100 A
Maximum break current 40 A
Contact material Ag Alloy
Insulation resistance < 100 MO
Width 28.1 mm
Depth 28.2 mm
Height 25.6 mm
Weight 30 g

Is there a minimum voltage or current needed to close the circuit?

Asked by: UniqueNickname
Minimum switching current: 40 A
Answered by: Dale
Date published: 2017-03-09
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Bulk Prices

Item code Item name Quantity Price
N85ED 12V DC 40A SPNO Automotive Relay (1+) £3.59

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