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5 Pack - EPAuto 30/40 AMP Relay Harness Spdt 12V, 5-PIN SPDT Bosch Style

4.7 out of 5 stars 3,531 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Automotive Replacement Starter Relays by EPAUTO

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  • 40A/30A high switching capability.
  • Heavy-duty impact molded relay socket with 5 WIRES。White (common), Black (normally closed), and Yellow (normally open).
  • Package Include: 5 relays + 5 relay sockets with wires.
  • Safety UL Flame retardant 9" wires for the main contact.
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Customer Rating 4.7 out of 5 stars (3531) 4.7 out of 5 stars (1206) 4.7 out of 5 stars (1177) 4.8 out of 5 stars (1156) 4.7 out of 5 stars (959) 4.7 out of 5 stars (204)
Price $13.87 $25.00 $10.47 $13.50 $14.95 $19.95
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Sold By EPFamily Direct IRHAPSODY® Direct EPFamily Direct OnlineLEDStore OnlineLEDStore IRHAPSODY® Direct

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Product description

Contact Capacity:

Normal switching Capacity (res.load):
    - NO 40A 14VDC
    - NC 30A 14VDC
Max. switching current: 40A
Max. switching voltage: 30VDC
Max. switching power: 560W

Characteristic Data:

Initial contact resistance (at 6VDC 1A): 50mΩ Max.
Operate time (at nominal volt.): 10 msec. Max.
Release time (at nominal volt.): 5 msec Max.
Initial insulation resistance: 100MΩ Min. (DC500V)
Initial dielectric strength:
    - Between open contacts: AC500V, 50/60 Hz 1Min.
    - Between coil and contact: AC500V, 50/60 Hz 1Min.
Vibration resistance:
    - Functional: 10 ~ 55Hz at double amplitude of 1.5 mm
    - Destructive: 10 ~ 55Hz at double amplitude of 1.5 mm
Shock resistance:
    - Functional: 20G Min.
    - Destructive: 100G Min.
Endurance (operations):
    - Mechanical (at 7,200 ops./h): 10,000,000
    - Electrical (at 600 ops./h): 100,000
Ambient Temperature: -40°C ~ +125°C (no condensation)


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Customer reviews

4.7 out of 5 stars
4.7 out of 5
3,531 global ratings
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Top reviews from the United States

Reviewed in the United States on February 5, 2017
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275 people found this helpful
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Reviewed in the United States on August 23, 2017
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3.0 out of 5 stars 10 Amp Relays Continuous 16 AWG is not rated for anything more
By Mark T. on August 23, 2017
CONS: All wires are 16 AWG which should not exceed 10 Amps continuously Also they claim -40 to 125 degree C ambient ... NOT POSSIBLE Wire has a 105 Degree C rating. I would only use these for 10 Amps or less and up to 90 C ambient to allow for the temperature rise of the coil and current through the contacts and 16 gauge wire. I tested this relay and at 25 Amps for 15 minutes the relay and wires were both above 75 C in an ambient of 22 C in my basement.
Pros: For something for $2+ for Relay, connector with wires. Very Good but do not believe the ratings for Temperatures and Current Capacities of 30-40 AMPS. Just be careful of your application and do not believe everything you read.
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70 people found this helpful
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Reviewed in the United States on March 15, 2016
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5.0 out of 5 stars Has Mounting Features that Isnt Mentioned and Should Be. See Pictures!
By ryan fenters on March 15, 2016
I purchased this pack of relays due to the price and what they are going to be used for. I have 5 devices on my golf cart where a standard switch would not hold the amperage. My plan was to make a panel to mount it all on to make it neat as possible. When they arrived I quickly noticed that each socket has a male and female slide. What this means is I can connect as many of these together as possible. This makes mounting them easy and clean looking. This wasn't mentioned in the add and should be (probably sell more). Also on the bottom of each relay it looks to be sealed which is also a plus.
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160 people found this helpful
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Reviewed in the United States on April 19, 2018
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25 people found this helpful
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Reviewed in the United States on May 13, 2019
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4.0 out of 5 stars Instructions are laughable
By Moore on May 13, 2019
They are what I expected, a low cost relay. These are perfect for adding lights or other high current devices on a low capacity circuit. I used them to run a small compressor on my pickup.
My only complaint were the instructions which were extremely unhelpful. Take my advice and use the diagram on the relay itself and not the included ones.
Pin 87a on the red wire is normally closed contact
Pin 87 on the yellow wire is the normally open contact
Pin 30 on the blue wire is the relay common
Pins 85 & 86 are the coil and polarity doesn’t matter.
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9 people found this helpful
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Reviewed in the United States on August 18, 2016
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28 people found this helpful
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Reviewed in the United States on March 27, 2018
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7 people found this helpful
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Reviewed in the United States on February 10, 2019
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3 people found this helpful
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