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EHDIS 12V Starter Relay 500 AMP 4 Pin SPST Car Auto Start Contactor Double Batteries Isolator Control On/Off Switch

4.2 4.2 out of 5 stars 98 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Contact Material Silver Tin Oxide
Contact Type Spst
Current Rating 500 Amps
Brand EHDIS
Operation Mode Automatic

About this item

  • Prevents primary battery discharge. Water resistant black phenolic plastic.
  • This Car relay with Red copper binding post: ensuring heavy current can be transited safely.
  • Rated voltage 12VDC, maximum instantaneous through current 500A. Work long times maximum 200A
  • Ensuring the maximum electric current can be transferred, for Multi-battery system Forklift Engineering Automotive
  • Package list: 1 * 4 pin 500A Heavy current relay starter battery isolator
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3.35 x 2.17 x 2.95 inches; 7.76 ounces
  • Item model number ‏ : ‎ C14-12V
  • Date First Available ‏ : ‎ April 19, 2017
  • Manufacturer ‏ : ‎ EHDIS
  • ASIN ‏ : ‎ B071YF2CX8
  • Customer Reviews:
    4.2 4.2 out of 5 stars 98 ratings

Product Description

Contact Data:
Contact Material: AgSnO12
Contact Form: Normal Open
Contact Ratings: No: 300A 14/28VDC
Contact Resistance: 100mMax at 6VDC 1A
Max switching Current: 500A
Max Switching Voltage: 75VDC
Max Switching Power: 2000W
Life Expectancy Electrical: 100,000 Operations (at 30 Operations/min)
Life Expectancy Mechanical: 10,000,000 Operations

Coil Specification:
Nominal Voltage(VDC): 12/24V
Coil Resistance (18W): 0/48
Max Operate Voltage (VDC): 0~12-16.8
Mix Release (VDC): 0~2.4-7.2
Max Applicable Voltage (VDC): 28

Characteristics:
Temperature Range: -30°C ~+80°C
Vibration Resistance: 10~55Hz, 1.5mm
Shock Resistance:
Operations Extremes: 10g
Damage Limits: 100g
Humidity: 40%~85%
Insulation Resistance: 100m ohm Min at 500VDC
Safety Standard: CCEE
Dielectric Strength Between Open Contacts 500VAC (for one minute/sec)
Between Contact and coil: 750VAC (for one minute/sec)
Operate Time: 25ms
Release Time: 10ms
Weigh: Approx. 200g

From the brand

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  2. EHDIS window tint tool

    how did we start

    Since 2016 we focus on tools for car relay.

    What makes our product unique?

    All products are made in our own factory, and we research to develop better products for each customer.

    Why do we love what we do?

    We want to release our product to all customers, and we want your feedback to help us keep moving.

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Customer reviews

4.2 out of 5 stars
4.2 out of 5
98 global ratings

Customers say

Customers like the performance of the relay, saying it works great to isolate two batteries when not charging. However, some customers report that the product runs hot to the touch.

AI-generated from the text of customer reviews

7 customers mention7 positive0 negative

Customers are satisfied with the performance of the relay. They mention that it works great to isolate two batteries when they are not charging.

"I'm giving this product a 5-star rating. Works great...." Read more

"works great to isolate two batteries when I am not charging the system. It gets a little warm to the touch but its not bad for handling 100A easily" Read more

"Uses in my RV to charge up the house batteries so far it's working great." Read more

"Used this to switch on the inverter for my car. Works perfectly. Great price as well." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the touch of the relay. They mention that it runs hot even at 40 watts.

"...It gets a little warm to the touch but its not bad for handling 100A easily" Read more

"Runs hot even at 40 watts. Just running a test setup with a household box fan that pulls 37 watts. It is very hot to touch with only 3 to 4 amps...." Read more

"...The body got hot enough to grey out the label!" Read more

Top reviews from the United States

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Lawrence
5.0 out of 5 stars Does as it says.
Reviewed in the United States on October 16, 2019
Verified Purchase
I'm giving this product a 5-star rating. Works great. I originally thought the product failed and contacted seller (no reply), but it was a faulty fuse wiring. Product 5 star, seller 1 star.
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Sudo
5.0 out of 5 stars works great to isolate two batteries when I am not charging ...
Reviewed in the United States on March 4, 2018
Verified Purchase
works great to isolate two batteries when I am not charging the system. It gets a little warm to the touch but its not bad for handling 100A easily
One person found this helpful
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Oscar
1.0 out of 5 stars Dangerous
Reviewed in the United States on February 18, 2023
Verified Purchase
Runs hot even at 40 watts. Just running a test setup with a household box fan that pulls 37 watts. It is very hot to touch with only 3 to 4 amps. At least one other review mentioned the heat. Something is wrong with this relay.

It is rated to use 18 watts, so I guess it makes sense it is hot to touch. Seems like that is excessive power needs for a relay though.
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DFitz
4.0 out of 5 stars Intermittent duty
Reviewed in the United States on July 14, 2018
Verified Purchase
I used this as a charging relay in my motorhome. Although it worked, I ended up changing it out for a different type - this relay does not appear to be rated for continuous duty. The body got hot enough to grey out the label!
4 people found this helpful
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aka-algorithm
5.0 out of 5 stars Great product, exceeds requirements.
Reviewed in the United States on December 28, 2021
Verified Purchase
7.3 hard starting on 45°f and below, turned out this was the fix! Questioning your glow plugs? Try replacing this first. A month into it and still firing right up.
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Glenn
5.0 out of 5 stars Works great
Reviewed in the United States on May 5, 2020
Verified Purchase
Uses in my RV to charge up the house batteries so far it's working great.
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Alejandro
5.0 out of 5 stars La calidad
Reviewed in the United States on November 10, 2021
Verified Purchase
Excelente producto si quieres conectar una batería extra o también si quieres instalar un inversor de más de 3000 watts
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James S.
5.0 out of 5 stars Great high amp solenoid
Reviewed in the United States on September 14, 2021
Verified Purchase
Holds up good to high amp service use
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Top reviews from other countries

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Yvan Boisclair
5.0 out of 5 stars Fonctionne bien
Reviewed in Canada on February 8, 2021
Verified Purchase
Marche super bien et fait la job de l’autre vieux que j’avais. Je recommande.
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都築春夫
5.0 out of 5 stars トピア
Reviewed in Japan on July 11, 2018
Verified Purchase
キャンパーのサブバッテリーの使用しました。今は問題ありません、後は耐久性があればベストに思う
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Gilles.M
5.0 out of 5 stars Selenoide
Reviewed in Canada on July 17, 2021
Verified Purchase
Fonctionne très bien et bonne qualité.
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Amazon カスタマー
3.0 out of 5 stars かしめ部分が
Reviewed in Japan on April 18, 2019
Verified Purchase
まだ取り付けただけですが、本体のかしめ緩く配線固定時に分解してしまいました。
再度かしめて取り付けしました。
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Steve M.
4.0 out of 5 stars Good for continues curnt ap to 200 amp
Reviewed in Canada on July 3, 2021
Verified Purchase
It looks good really but again overrated 500 Amps momentarily may be passable but continues maximum 200 amp
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