MC2/012-1HR 4-pin Car Relay for car fuse box
Basic Information
Parts No.：MC2/012-1HR
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: 30A (resistive)
2. • NC contact: 20A (resistive)
Insulation resistance: 100M Ω (500VDC)
Characteristic
☞ Contact switching capability 30A
☞ It has two contact forms: Normally Open(NO) and Changeover
☞ Operating temperature: 125°C
☞ Multiple operating voltages
☞ Comply with RoHS and ELV directives
Applications
Heater (seat, front/rear window heating control), fan control, wiper control, headlight control, car air conditioning, electromagnet control, lighting system, linkage, etc.
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: Static spring, Dynamic spring, 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.
1. ● 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.
