

WSB7-63 series high breaking miniature circuit breaker
is applied in line of AC 50/60Hz, rated voltage 230/400V
and rated current upto 63A for overload and short circuit
protection, also for usage of infrequent operation switching
of line under nomal circumstance. It is used at places of
industrial, commercial, high-rise and residula buildings,
meets standards IEC/EN60898-1 and GB10963.1.
WSB7LE-63 series redisual current operation circuit
breaker (with over-current protection) is applied in line of
AC 50/60Hz, rated voltage 240/400V and rated current
upto 63A. The residual current operation circuit breaker
can cut fault current in a very short time period when
personal touching or current leakage of the net exceeding
the specified value. It can also for usage of overload, short
circuit, infrequent switching of the line, and infrequent
starting of the motor. The product is used at place of
industrial, commercial, high-rise and residential building,
meets standards of IEC 61009-1 and GB 16971.1
Pole: 1P, 2P, 3P, 4P
Voltage: AC230V/400V
kA: 4.5kA, 6kA
Amps: 6, 10, 16, 20, 25, 32,40, 50, 63
Width: 18, 36, 54, 72mm
WSB7LE-63
Pole: 1P+N
Voltage: AC230V
kA: 6kA (6-40A); 4.5kA (50-63A)
Amps: 6, 10, 16, 20, 25, 32,40, 50, 63
Width: 36mm
WSB7
Current rating (A) | 6, 10, 16, 20, 25, 32, 40, 50, 63 | ||
Type of instantaneous tripper | Type B (3-5)In; Type C (5-10)In; Type D (10-20)In | ||
Pole (P) | 1P, 2P, 3P, 4P | ||
Rated short circuit breaking capacity | Current rating (A) | 1-63A | |
Pole (P) | 1P, 2P | 3P, 4P | |
Rated voltage (V) | 230 / 400 | 400 | |
Rated short circuit breaking current (A) | 6000 (6-40A); 4500 (50-63A) | ||
Power factor COSΦ | 0.7 | ||
Mechanical electrical life | Current rating (A) | 1-32A | 40-63A |
Electrical life (times) | 4000 | ||
Mechanical life (times) | 20000 | ||
Operation frequency (times / hour) | 240 | 120 |
WSB7L
Current rating (A) | 6, 10, 16, 20, 25, 32, 40, 50, 63 | ||||||||||
Rated residual action current I△n (mA) | 30 | ||||||||||
Rated residual non-action current I△no (mA) | 15 | ||||||||||
Rated voltage (V) | 230 | ||||||||||
Max breaking time (s) | I△n | 0.2 | |||||||||
2I△n | 0.1 | ||||||||||
5I△n | 0.04 | ||||||||||
Rated short circuit breaking capacity (kA) | 6 | 4.5 | |||||||||
Type of instantaneous releaser | Type C | Type D | |||||||||
Test current | 1.13In | 1.45In | 2.55In | C | D | ||||||
5In | 10In | 10In | 20In | ||||||||
Initial state | Cold | Thermal | Cold | Cold | Cold | Cold | Cold | ||||
Test time (L) | t≥1h | t<1h | 1s | 1s | t≥0.1s | t<0.1s | t≥0.1s | t<0.1s |
WSB7LE
Current rating (A) | 6, 10, 16, 20, 25, 32, 40, 50, 63 | ||
Residual operation current rating (A) | 0.03, 0.1, 0.3 | ||
Pole (P) | 1P+N, 2P, 3P, 3P+N, 4P | ||
Rated ultimate short circuit breaking capacity Icn | 6000 A | ||
Rated operation short circuit breaking capacity Ics | 6000 A | ||
Rated residual non-action current I△no | 0.5I△n | ||
Breaking time of residual current action | In (A) | 6, 10, 16, 20, 25, 32, 40, 50, 63 | |
I△n (A) | 0.03, 0.1, 0.3 | ||
Residual current (I△) | I△n | 0.1 | |
2I△n | 0.06 | ||
5I△n | 0.04 | ||
Breaking time when equals value is below (s) | 500A | 0.04 maximum breaking time |
















Frequently Asked Question (FAQ)
Q: About the company
A: Westhomes® is a professional manufacturer for low voltage and high voltage electrical products with a thirty-year history.
Main supplier of state-owned companies like China Stae Grid, China Southern Power Grid through bidding with bunches of test certificates, sales records and operation performance to support.
Enough investment for research and development for the products innovation.
Q: About Warranty
A: 18 months from the date of receivement
Q: About shipment method
A: Depends on the required quantity and delivery urgency, both international express like UPS / DHL / EMS / HK EMS / FedEx / TNT (door to door service) and normal sea shipping & air freight also avaliable.
Q: About MOQ
A: Up to the client
Q: About payment method
A: We accept T/T, Paypal, Western union, L/C. Normally 30% payment in advance, 70% before delivery.
Q: About ordering process
A: First to send an inquiry via made-in-china platform or directly to the contact e-mail address. All the following thing is the communication between us.