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28VDC 1B 1C Electromagnetic Power Relay For Electrical Apparatus Product

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28VDC 1B 1C Electromagnetic Power Relay For Electrical Apparatus Product

28VDC 1B 1C Electromagnetic Power Relay For Electrical Apparatus Product
28VDC 1B 1C Electromagnetic Power Relay For Electrical Apparatus Product 28VDC 1B 1C Electromagnetic Power Relay For Electrical Apparatus Product

Large Image :  28VDC 1B 1C Electromagnetic Power Relay For Electrical Apparatus Product

Product Details:
Place of Origin: Zhejiang
Brand Name: Wanjia Star
Certification: CQC
Model Number: WJ178A
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: Negotiated
Packaging Details: 25*20*7cm,Massive:to be advised
Delivery Time: 7~10WD
Payment Terms: L/C, T/T
Supply Ability: 800000 units per month

28VDC 1B 1C Electromagnetic Power Relay For Electrical Apparatus Product

Product Name: Electromagnetic Protection Relay Contact Arrangement: 1A、1B、1C
Contact Material: Silver Alloy Contact Resistance: Max.50mΩ
Max. Switching Voltage: 28VDC/250VAC Max. Switching Current: 40A
Max. Switching Power: 1120W/10000VA Electrical Life: 2×10^4
Mechanical Life: 1×10^7 Contact Load: 40A 250VAC/28VDC
Usage: General Purpose,Protective
High Light:

1B1C electromagnetic relay switch


1B1C electromagnetic power relay


28VDC electromagnetic power relay

JQX-40f Electromagnetic Protection Relay for Electrical Apparatus Product



Coil Voltage: DC: 6~220V AC: 6~220V

Contact Load: 40A 250VAC/28VDC

Appearance Dimension: 71.5×37.0×45.0mm

Single Poles Conversion

Strong Resistance, High Reliability

Complying with IEC255 & GB8898 Standard

● Widely used for bump car,ups,cropper,rolling door,smart lighting,machine equipment,stabilizer,motor device,

   EV charger,regulator,household appliance




Main Parameters  
Contact Arrangement 1A,1B,1C
Contact Material Silver Alloy
Contact Resistance Max.50mΩ
Rated Load 40A 250VAC
40A 28VDC
Max. Switching Voltage 28VDC/250VAC
Max. Switching Current 40A
Max. Switching Power 1120W/10000VA
Electrical Life 2×104
Mechanical Life 1×107
Coil Power Consumption DC 3.0W
AC 4.2VA
Coil Voltage DC 6~220VDC
AC 6~220VAC


Other Parameters
Pick-up Time Max.25ms
Release Time Max.25ms

Dielectric Strength

Coil Contacts 2500VAC ,(50/60Hz), 1 min.
Open Contacts 1500VAC ,(50/60Hz), 1 min.
Insulation Resistance Min. 1000MΩ (500 VDC)
Environment Temperature -40℃~+55℃
Operation Humidity 45%~85% RH
Shock Resistance Functional Min. 10G
Destructive Min. 100G
Anti-vibration Functional 1.5mm(DA)10~55 Hz
Destructive 1.5mm(DA)10~55 Hz
Weight ≤110g



3.Application Notes:

3.1 Suggestions of Plastic Anti-dust Cover

We highly recommend cover 

(1)When the ambient humidity is ≥ 60% (for example refrigerator or some country like Indian), the metal parts of relay will be weakened in different degrees due to long-term exposure to the outdoors in terms of electrical conductivity and service life.

(2)When the dust density is high in the environment, all kinds of impurities carried in the dust (such as gravel), if gravel is embedded between contacts. Firstly, it will affect the normal opening and closing of contacts;Secondly, part of the silicon oxide can be used as a semiconductor to conduct electricity, and then the relay's on and off will fail if no anti-dust cover.

(3)When corrosive gases are serious in the environment, it will accelerate the metal aging, greatly affecting the service life of electrical relays.

* When none of the above situations exists, the plastic anti-dust cover is not necessary due to extra cost.

3.2 Suggestions of Contacts

(1) We should pay attention to prevent contact movement, adhesion, abnormal consumption, increase of contact resistance and other fault phenomena while using.

(2) Normally the material of power relay can be AgCd010,AgSn08,AgSnOlnO etc.Wanjia star brand relay adopted AgSnO2 with high quality and stable performance.

(3) The mechanical service life and electrical service life can be main factor too

* In a word, good device need good relay to low the repairing rates and improve the endurance.



4.Why Choose Us

Single Dual Coil IEC Standard UC2 Approved Magnetic Latching Relay 0




Q1: What kind of product and service do you have?

We provide all kinds of electronics including power relay, latching relay, change-over switch, current transformer, shunt, smart sensor, communication & power supply module, transformer etc.

The manufacturer of meter instrument, electrical device, EV charger, medical equipment can find one step solution here. Individual buyer,distributor or (sole/ designated) agents are also welcomed by us.



Q2: Are you are factory or trading company?

We are the manufacturer,designer and sales company. Our own factory was located in Tongxiang city of Zhejiang province.

For our history plz click About us or watch IVY factory video on Youtube.


Q3: What’s the relationship between IVY & Wanjia Star?

We are the exclusvie sales center of Wanjia star. All the products here are original products with factory price. Welcome to confirm with them or check with us directly. For the fakes on the market, we insist to strike



Q4: Whether the price will change greatly?

To business customers, we mark price can be negotiated here as huge demand.

Usually we will not change the prices unless some force majeure such as trade war, exchange rate change greatly etc.



Q5: Can you offer customized solution, how should I get a quotation?

Yes!We can offer customized products especially when we supply EV accessories and meter accessories. To get a quoation plz kindly offer your basic company info for registration and offer your drawing.

It usually takes 12 hours to 48 hours to filnish the design and drawing (If complicated then plz refer to pracatical situation).



Q6: How do you handle the quality problems?

We are proud of our quality! If any accidents on quality, we have before-sales, in-sales and after-sales service. And every customer will have your own sales expert and technical support.

Contact Details

Contact Person: oversea-marketing

Tel: +8613472858741

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