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