NBS01252003- RCCB 2P 25A 30mA AC 240V-Residual Current Circuit Breaker

1. APPLICATION

NBSL1-100 series residual current circuit breakers Is suitable for the line of AC 50/60Hz, voltage 240V(2pole)/415V(4pole), rated current up to 63A. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, it will cut off the power rapidly to protect human safety and prevent the accident due to the current leakage. It can be used as infrequent changeover of the line in normal situation. It is applicable to industrial site, commercial site, tall building and civil house.
It complies with standard of IEC/EN61008.1 and GB16916.1.
Each phase of conductor at the circuit breaker passes through the zero-sequence current transformer, and the secondary side of coil connects with the electromagnetic tripper. Under normal condition, the vector sum of each phase of current passing through zero-sequence current transformer is zero. The flux of the zero-sequence current transformer is zero. And the secondary output voltage is zero and the circuit breaker doesn't zreo, and the zero-sequence current transformer would produce the magnetic flux, and the secondary side of coil would output the voltage. Once the leak current increases to drive the output voltage at the secondary side to grow to certain level, the electromagnetic release would activate to drive the operation mechanism to act to break the contact that connects the power, finally to realize the leak protection.

2. TECHNICAL PARAMETER

3. OPERATION PRINCIPLE FIG.

4. WORKING PRINCIPLE

NBS01252003- RCCB 2P 25A 30mA AC 240V-Residual Current Circuit Breaker
A residual-current device (RCD), or residual-current circuit breaker (RCCB), is a device that quickly breaks an electrical circuit to prevent serious harm from an ongoing electric shock. RCD Protection

· Line voltage independent RCCB for fault or additional protection with additional digital features
· System Monitoring: Preventive information / warning before the RCD trips in case of leakage currents: Integrated auxiliary contact(s), Local Indication
· New level of accuracy - Reduced unwanted tripping
· Local status indication of residual current through 3 LEDs
· No monthly test required
· Comprehensive range of accessories
· Real contact position indicator
· Fault current tripping indicator
· Automatic re-setting possible
· Transparent designation plate

FAQ:
Q1: What's your product Range?
A.
- Shell Unti-fire. nylon pa66 or not unti-fire.
- Parts, Copper or iron
- Point Sliver point or Copper point

Q2: Are you a manufacturer?
A. Yes, we are only produce the circuit breaker over 20 years from 1999.

Q3: Do you have stock products to sell?
A. No,we work on OEM orders, The means, material, quantity,packing solution,etc will depend on your requests.obviously, your logo can be printed on the products.

Q4. what's the payment term?
A. We accept TT,30% deposit and 70% balance agaisnt copy of BL
Q5. how's the delivery time ?
A. usually it will take about 30 days for 30000pcs

Q6. tell me the standard of package?
A. Normally are cartons, color box or white box

Q7. what kind of material of circuit breaker?
A. we have two types, one copper coil with silver point and the other is brass coil with copper point. It depends on your requirement. In fact, those two have no difference if normal work well. Only except the electrical life. Copper and silver is better and also higer price.
Q8. We want to know month capacity.
A. 400,000pcs/month
Q9. Where is your market?
A. Our products are popular in Western Europe, Middle-East, Afirca, South Asia ,South Ameirca countries and area. Some of them are our regular customers and some of them are developing. We hope you can join us and make mutural benifit from our cooperation.
Q10. what kind of certificate you have ?
A. CE, CB,CCC,ISO9000.

Q11. Do you inspect the finished products
A. Yes.Each step of products will be inpected by QC department before shipping.

Q12. How are you ship the finished products?
- By Sea
- By plane
- By counties,TNT, DHL,FEDEX,UPS.etc.