CZW300A Normally Open DC Contactor

CZW300A Normally Open DC Contactor

Discover the CZW300A Normally Open DC Contactor for reliable performance in your electrical applications. Ideal for efficient control and automation solutions
Overview

FEATURES

With the development of smart grid and renewable energy technologies, the application of normally open DC contactors is also expanding. In electric vehicle charging stations and solar power generation systems, they can achieve precise control of current and improve the overall efficiency of the system. Therefore, for electrical engineers and technicians, mastering the working principle and application scenarios of normally open DC contactors is an important part of improving professional capabilities and meeting the challenges of modern electrical systems.

SAYOON MODEL IMPLICATION

CZW

300A

-S

-C

-K

-M

-□

/24V

1

2

3

4

5

6

7

8

1

Product type                

2

Rated current                

3

Auxiliary switch: None-Without auxiliary switch; S-With auxiliary switch

4

Magnetic blow-out

5

Magetic holding structure: K-Two joint magnetic retention (Single coil, Two joint self-locking); 2K-Three joint magnetic retention (Double coil, Three joint self-locking)

6

Mounting bracket type: M-Horizontal (default); L-One vertical; 2L-Two vertical

7

Other function codes: l-With suppressor diode; R-With pre-charged resistance; CO-Continuous; IN-Intermittent

8

Coil rated voltage: 12V, 24V, 36V, 48V, 60V, 72V etc.

Uses

This product have one normally open contact, for electric vehicles, telecommunication equipment, engineering machinery, car batteries, electric forklift trucks, trains, ships, electronic control systems such as uninterruptible power supply.

Technical Parameters:  (Version 1.58)

 SAYOON Product Type

 CZW300A

 Contact form

 1 NO

 Coil Rated voltage (DC V)

 6V,12V,24V,36V,48V,60V,72V,84V,120V,150V,220V etc.

 Contact voltage (DC V)

 ≤80V

 Rated load current of contact 48V circuit (DC-1)

 300A

 Typical voltage drop across contacts per 100A

 ≯80mV

 The cooling pull-in voltage at (20±5)℃ (V)

 ≯70%

 The cooling drop-out voltage at (20±5)℃ (V)

 ≯35%,≮5%

 Working voltage range of 40℃ coil

 0.8-1.2Us

 Drop-out time (n/o contacts to open)

 40ms

 Pull-in time (n/o contacts to close)

 10ms

 Maximum bounce time for contact connection

 10ms

 Maximum bounce time for contact disconnection

 3ms

 Insulation resistance

 20MΩ

 Electric strength to resist

 50Hz/60Hz 1000VAC 1minute

 Typical fault currents which can be ruptured

 1000A/5ms at 48V/DC

 Coil power (W)

 12-18

 Temperature rise of coil (K)

 ≤60

 Temperature rise on outgoing terminal (K)

 ≤65

 Electrical life

 20,000 times

 Mechanical life

 300,000 times

 Work specification

 Continuous (default) or Intermittent

 Contact material

 Ag alloy

 Load terminal type

 M8 Screw

 Coil terminal type

 6.3mm spade terminals

 Auxiliary contact rated load (optional)

 2A/48VDC, 5A/24VDC

 Testing organization certification

 CE,FCC


Note:As regarding to the different using environments of customers which requires different focus of the functions,and in order to improve the comprehensive properties of our products,sayoon may adjust the coil parameters,temperature rise and so on. The above parameters are for reference only, For details, please refer to the guidelines for selection and use of the SAYOON DC contactor.

Load Characteristic Curve

  • fzsm-300-20k
  • fzsj-300-1000

Installation Diagram

czw200aczw200a_1

Wiring Diagram

SEV100AD HV DC Contactor detial (2)

Temperature Curve

xqws-czw100a

Mechanical Ability And Use Of The Environment

 Contact lead M8 tightening torque (N.m)

 ≯9.0 appropriate

 Coil lead-out torque (N.m)

 ≯0.8 appropriate

 Ambient temperature

 -25~+70℃

 Relative humidity

 +20℃ 98%

 Vibration freq. atthe fixed position

 3G, 1~50Hz amplitude 0.5mm

 Concussion

 (60~100) time/minute、acceleration≤4g

 Altitude

 2000m

 Installation direction

 Random

 International protection

 IP40 (According IEC60947)

Order Instruction

 SAYOON Product Type

 CZW300A

 U.N.W.

 740g

 Package QTY.

 40PCS

 Mounting bracket type

 M Horizontal (default), 1L One vertical, 2L Two vertical


When ordering, please state the following: name, full model, control coil voltage specification, installation frame type, whether with auxiliary contact, order quantity. For example: DC Contactor CZW300A/24V 100pcs, indicating the load rated current 300A, without auxiliary contact, default mounting bracket, coil control voltage 24V purchase 100pcs. Special voltage specification products, such as user needs can be special order.

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+86 130 5791 2357
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sayoon@sayoon.com