NBSe NBSM30-100/4300 mold case circuit breaker,thermal magnetic
circuit breaker
1. Product Description
NBSM30 moulded case circuit breaker series is one of products
developed and manufactured by adopting international advanced
technology. It's supplied with rated insulation voltage 800V(NM1-63
is 500V)and rated operating voltage is 690V (or below,NM1-63 is
400V),rated operating current up to 1250A for inf requent changing
over and starting of the motors. The KCM1 series is suited to
vertical installation and horizontal installation. The temperature
is not higher than 40 ℃ and not less than -5℃.
2. Technical Data
| Type | Rated Current (A) | Pole number | Rated Insulating Voltage(V) | Rated operating voltage(V) | Ultimate short circuit breaking capacity(KA) | Servies short circuit breaking capacity(KA) | Utilization category |
| NBSM30-63L | (6),10,16,20,25 ,32,40,50,63 | 3 | AC 500V | 400V | 25 | 18 | A |
| NBSM30-63M | 50 | 35 |
| NBSM30-100L | (10),16,20,25,32,40, 50,63,80,100 | AC 690V | 35 | 22 |
| NBSM30-100M | 50 | 35 |
| NBSM30-100H | 85 | 50 |
| NBSM30-225L | 100,125,160,180,200,000 | 4 | 35 | 25 |
| NBSM30-225M | 50 | 35 |
| NBSM30-225H | 85 | 50 |
| NBSM30-400L | 225,250,315,400 | 50 | 35 |
| NBSM30-400M | 65 | 42 |
| NBSM30-630L | 400,500,630 | 50 | 35 |
| NBSM30-630M | 65 | 42 |
| NBSM30-630H | 100 | 65 |
| NBSM30-800M | 630,700,800 | 3 | 70 | 50 |
| NBSM30-800H | 100 | 65 |
| NBSM30-1250 | 80,010,001,250 | 65 | 32.5 |
|
Note: 6A without thermal protection
The N-pole of four-poles breaker is sited at the right side of the
product has four types:
Type A: Without current trip-lease on N pole which making all the
time, not closing and opening with the other three poles.
Type B: Without current trip-release on N pole which closing and
opening with the other poles.
Type C: With current trip-release which closing and opening with
the other three poles.
Type D: With current trip-release which making all the time not
closing and opening with the other three poles.
3. Protection Characteristic
The thermodynamic release of a circuit breaker provides the feature
of inverse time-delay, while the magnetic release is the
instantaneous operation as shown on table 2(distribution circuit
breaker) and table 3 (motor protection circuit breaker).
Table2
| Rated current of release (A) | Thermodynamic release ( ambient temperature ) land +40°C marine +45°C | Operating current of magnetic release (A) |
1.05In(cold state) Inoperative time(h) | 1.30In(heat state) Operative time(h) |
| 10≤In≤63 | ≥ 1 | < 1 | 10In±20% |
| 63≤In≤100 | ≥ 2 | < 2 |
| 100≤In≤800 | ≥ 2 | < 2 | 5In±20% 10In±20% |
Table3
| Rated current | Thermodynamic release ( ambient temperature ) land +40°C marine
+45°C | Operating current of magnetic release (A) |
| of release (A) | 1.0In(cold state) non-trip time(h) | 1.20In(heat state) trip time (h) | 1.50In(heat state) trip time (h) | 7.2In(cold state) trip time(h) |
| 10 ≤ In ≤ 225 | ≥ 2 | <2 | ≤ 4min | 4s < Tp ≤ 10s | 12In±20% |
| 225 ≤ In ≤ 630 | ≤ 8min | 6s < Tp ≤ 20s |
ABOUT US
Founded in 1993, Wenzhou New Blue Sky Electrical Co., Ltd(Former
Yueqing Blue Sky Electrical Co., Ltd)is situated in beautiful Wuniu
Industrial Park, Wenzhou City at the bank of Oujiang River; it is a
high and new-tech enterprise professionally researching,
developing, and manufacturing miniature circuit breakers and
residual current circuit breakers. The company has been awarded
honors such as “AAA-grade Export Credit Enterprise”, “Advanced
Enterprise”, “Star Enterprise”, and “Patent Model Enterprise” in
successive years. At present, the company is abundant in financial
resources and advanced in technologies, possessing more than 70
domestic and international patents; it has over 10,000 square
meters of standard workshops. The company employs more than 150
people (25 technicians and senior engineer;). In addition, the
company has deployed a batch of advanced manufacturing devices and
precise detecting and inspection instruments. It established the
Technology Research and Development Center in 2005, which have been
authorized as “Enterprise technology research and development
center of Zhejiang Province” and “Patent demonstration enterprise
in Zhejiang Province” by People's Government of Zhejiang Province;.
possessing strong strength in technology research and development.
Over the past two decades, under its operation philosophy of
“integrity, innovation, competitive products, and fair price” and
production philosophy of “one false step will make a great
difference”.
Our Services
(1) Warranty ( 24 months warranty )
1. The warranty starts from the delivery date from our factory;
2. During the warranty, any defective product will get repaired or
replaced for free ;
3. It is beyond the warranty as the products breaked by the
violence , the carelessness or repaired , altered without
authorization.
(2) Lead Time
1. Sample orders will be delivered from our factory within 7
working days.
2. General orders will be delivered from our factory within 7-15
working days.
3. Bulk orders will be delivered from our factory within 25 working
days at most
(3) Shippment
1. By EMS, DHL, FedEx, TNT, UPS or other express.
2. By our forwarding agent (by air or by sea).
3. By your own forwarding agent.
4. By domestic forwarding agents to any city in China
