QUNENG - MMCB (molded case circuit breaker) series
Electronic plastic-case circuit breaker has four protection functions: overload long delay, short delay, short instantaneous and ground fault.
Commonly used, the rated current has the following types 15 25 30 40 50 60 75 80 100 125 160 200 225 250 315 350 400 500 630 A.
| Working Temperature |
-5 degree to +40 degree
|
Arc-extinguishing medium
|
Normal arc extinguishing chamber |
Port
|
Qingdao port, China |
Install method
|
1. Fixed type 2. Plug type 3. Pull type |
Plastic-case circuit breakers are also known as device circuit breakers, all parts are sealed in a plastic shell, auxiliary contacts, undervoltage release and shunt release, etc., are modular. Because the structure is very compact, the plastic-case circuit breaker can not be repaired.
Most of them use manual operation, large capacity can choose electric closing. Due to the application of electronic overcurrent release, plastic-case circuit breakers can also be divided into class A and Class B. Class B has good three-stage protection characteristics, but due to price factors, the market share of class A products using thermal magnetic release is higher.
Plastic-case circuit breaker is the contact, interrupter, release device and operating mechanism are installed in a plastic shell, generally do not consider maintenance, suitable for the branch protection switch, over current release device has two kinds of thermal magnetic and electronic, general thermomagnetic plastic-case circuit breaker is a non-selective circuit breaker, only overload long delay and short circuit instantaneous two protection methods.
Some of the new products of electronic mould-case circuit breakers also have regional selective interlocking function. Most of the moulded case circuit breakers are manually operated, and some have motor operating mechanisms.
FAQ
Q1: Are you a factory or trading company?
A1: We are a factory, and we can guarantee our price is first-hand very cheap and competitive.
Q2: What is the payment term?
A2: We accept T/T 30% deposit and 70% balance payment, the balance should be paid after acceptance before shipment.
Q3: Could I have the prices of your products?
A3: Welcome. Please feel free to send us an inquiry here. We will reply to you within 24 hours.
Q4: How about the delivery time?
A4: Usually it will take about 15-20 days
Q5: May I know the warranty time?
A5: In 12 months since BL date.
Q6: Do you accept product customization?
A6: Yes of course. Please provide specific drawings or parameters we will quote you after evaluation.
Audited Supplier 
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