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Relay 5-Pin 40A
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Relay 5-Pin 40A

$23.85

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Category: Accessories Tags: driveway gates, gate automation, gate motor, Gate opener, gate operator, relay
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Description

Relay 5-Pin 40A

*DC 12 V

*NC/NO

A 5-pin 40-amp relay is an electromechanical switch commonly used in automotive and other applications to control a higher-power circuit using a low-power signal.
It has five terminals: two for the control circuit (coil) and three for the switched circuit (contacts). The 40-amp rating indicates the maximum current the relay’s contacts can safely switch. 

Key features and characteristics:
  • 5 Pins:
    Unlike a 4-pin relay, a 5-pin relay has an extra terminal (often labeled 87a) which provides a normally closed (NC) contact in addition to the normally open (NO) contact.
  • 40 Amp Rating:
    This means the relay’s contacts can handle a maximum current of 40 amps without overheating or failing.
  • SPDT (Single Pole Double Throw):
    This refers to the switching capability of the relay. It can switch between two circuits (one normally open and one normally closed).
  • 12V Coil:
    Most automotive relays operate on 12V DC, meaning the coil is designed to be energized by a 12V power source. 

How it works:
  1. 1. Control Circuit (Coil):
    When a small current is applied to the two coil terminals (usually pins 85 and 86), it creates a magnetic field.
  2. 2. Magnetic Field:
    The magnetic field attracts an armature, which is a moving part inside the relay.
  3. 3. Switching Contacts:
    The movement of the armature changes the state of the contacts (pins 30, 87, and 87a).
  4. 4. Switched Circuit:
    This switching action allows a higher current from a separate power source (e.g., battery) to flow through the relay’s contacts to a connected device (e.g., lights, horn, etc.). 

Common Applications:
  • Automotive: Controlling headlights, fog lights, horns, fuel pumps, and other high-current accessories.
  • Industrial Control: Switching motors, solenoids, and other heavy-duty equipment.
  • General Purpose: Any application where a low-power signal needs to control a higher-power circuit. 
Additional information
Weight 0.04 kg
Dimensions 5 × 5 × 5 cm
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We are proud to provide you with driveway gate operator services and accessories. We have more than 28 years of experience in selling, installing, maintaining, and repairing electronic accessories for homes with the latest technology.
• #100 - 11538 132a St, Surrey, BC, V3R 7S2
• Sales Dep.: (778)384-2800
• Service Dep.: (778)561-4530
• info@retcc.ca

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