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M4/012-1H1G 4-pin Car Relay for car fuse box

Description: M4/012-1H1G 40A  Relay for Automotive engine

Series: 4-pin Car Relay

Parts No. : M4/012-1H1G

Contact Switching Capability : 40A

Insulation Resistance : 100M Ω (500VDC)


Reference No.: M4/012-1H1G

Product Detail

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Basic Information

Parts No.:M4/012-1H1G

Name:4-pin Car Relay

Contact pressure drop:

1.    • Normal value: 40mV (10A)

2.    Maximum value: 200mV (10A)

Minimum load: 1A 6VDC

Electrical life: 1*105 times

Mechanical life: 1*107 times, 300 times / min

Maximum continuous current:

1.    • NO contact: 40A (resistive)

2.    NC contact: 30A (resistive)

Insulation resistance: 100M Ω (500VDC)

Characteristic

☞    Contact switching capability 40A
☞    It has three contact forms: Normally Open(NO), Changeover and Dual Output
☞    Multiple installation methods
☞    Multiple operating voltages
☞    Comply with RoHS and ELV directives

Applications

Rear window demister, battery circuit breaker, automobile air conditioner, oil pump control, fog lamp, cooling fan control, headlamp control, etc.

What is a Car Relay?

Relay is a kind of control equipment commonly used extensively throughout vehicle electrical systems. It is a switch that is operated electrically, it is also a control object (actuator) that will turn off or on when the conditions are met. When the electricity, magnetism, sound, light or heat output reaches a certain value, the output will change by leaps and bounds. The voltage of the automobile power supply is mostly 12V, so the coil voltage is mostly 12V.

What is the internal structure of the relay?

The automobile relay consists of 3 parts:

● The magnetic circuit system: Coil, Iron core, Yoke, Hinged armature

 The contact system:  Fixed contact, Moving contact, Contact base

 The restoring mechanism: Restoring reed or Tension spring.
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Introduction of common 4-pin or 5-pin Car Relays

 Make & Break Relay

It is also known as SPST (Single-Pole, Single-Throw). There are 4 pins (or terminals) on the body with one high current circuit and contact. The contact is opened or closed depending on whether the relay is at rest or energized.

4 pins SPST Make & Break Relay

     ●  If the contact is closed when the relay is at rest, the relay is called Normally Closed (NC).

2.   If the contact opens when the relay is stationary, the relay is called Normally Open (NO). These relays are the more common type.

Changeover Relay

It is also known as SPDT (Single-pole, Double-throw). There are 5 pins (or terminals) on the body, there are two contacts connected to a common terminal. The relays have two circuits, one is closed when the relay is at rest, and the other is closed when the relay is energized.

5 pins SPDT Changeover Relay

How to store relays?

  Avoid direct sunlight and maintain normal temperature, humidity, and pressure as below:

1.  ●  Temperature: 10 ℃ ~ 35 ℃

2.  ●  Humidity: 5 ~ 85% RH

3.  ●  Air pressure: 86 ~ 106kpa.

  Regularly check the products in stock and try to avoid the relay storage time being too long.

  The relay shall be stored and installed in a clean environment. Please use a dust cover or plastic encapsulated relay in the environment with dust pollution.


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