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Distribution electrical appliances
WHKM3L RCCB
The WHKM3L series of residual current circuit-breakers(hereinafter referred to as the "circuit breaker") is one of the new types of circuit breakers developed by our company using advanced international design and manufacturing technologies. Its rated insulation voltage is 1000V, and it is applicable to AC 50Hz circuits with a rated working voltage of 400V and below, and a rated working current up to 630A.
Product Details
Model and Meaning
Technical Specifications
Appearance and dimensions
Other
WHKM3L series residual current circuit-breakers (hereinafter referred to as circuit breaker) is one of the new circuit breakers developed and developed by our company using international advanced design and manufacturing technology. Its rated insulation voltage is 1000V, which is suitable for infrequent conversion and infrequent motor starting in circuits with AC 50Hz, rated working voltage 400V and below, and rated working current to 630A. Circuit breakers have overload, short circuit and undervoltage protection functions, which can protect lines and power equipment from damage. At the same time, they can also provide protection against fire hazards caused by long-standing ground faults that cannot be detected by overcurrent protection.
Circuit breakers are classified into two types, M-type (higher breaking capacity) and H-type (high breaking capacity), based on their rated ultimate suit breaking capacity (Icu). This circuit breaker features a compact size, high breaking capacity, short arc distance, and vibration resistance. The circuit breaker can be installed vertical(upright) or horizontally (flat); reverse wiring is not allowed, meaning only terminals 1, 3, and 5 are permitted for power supply lines, while teminals 2, 4, and 6 are for load lines. The circuit breaker is suitable for isolation.
| WHK | M | 3 | L | — | ☐ | ☐ | ☐ | / | ☐ | ☐ | ☐ | ☐ | ☐ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
enterprise Code |
Plastic outer Shell fracture Road instrument |
Design Serial number |
Electronic type |
Shell frame etc. Class rating current |
Rated limit Short circuit break Competency Level |
Operator Formula (4 |
Number of poles |
Tripping side Formula and attachments Part Code |
Purpose Code （3 |
Quadrupole product Code （2 |
Electric leakage call the police unit Module （1 |
Note: 1) The module without leakage alarm unit has no code; The module with leakage alarm unit is represented by I in the first working mode and II in the second working mode.
2) Three-pole products have no code names, and four-pole products are classified as A, B, C, and D.
3) Circuit breakers for power distribution have no code, and circuit breakers for motor protection are represented by 2.
4) The handle is directly operated without code; Electric operation is denoted by P; Turning the handle operation is indicated by Z.
◆Technical Performance Indicators Table 3
* Note: 1. The limit breaking and arc distance includes horizontal installation and vertical installation;
2. When this series of three-pole circuit breakers is connected to a three-phase load, the load cannot have a neutral wire, otherwise the circuit breaker will malfunction;
3. When this series of three-pole circuit breakers is connected to a single-phase load, the phase wire is connected to the left pole, the neutral wire is connected to the right pole, and do not connect to the center pole.
Residual current protection action schedule four
| Model | WHKM3L-125 | WHKM3L-250 | WHKM3L-400 | WHKM3L-630 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Frame current lnm(A) |
125 | 250 | 400 | 630 | ||||||||
|
Rated current In(A) |
16.20、25、32.40、 50、63、80、100、125 |
100、125、140、160、 180、200、225、250 |
225、250、315 350、400 |
400、500、630 | ||||||||
| Infinity | 3/4 | |||||||||||
|
Rated insulation voltage Ui(V) |
AC 1000 | |||||||||||
|
Rated operating voltage Ue(V) |
AC 400 | |||||||||||
|
Rated impulse withstand voltage Uimp(V) |
8000 | 12000 | ||||||||||
|
Arc discharge distance (mm) |
≯50 | ≯100 | ||||||||||
| Breakdown capability level | M | H | M | H | M | H | M | H | ||||
|
Limit short-circuit breaking capacity lcu(kA) |
AC400V | 35 | 75 | 35 | 75 | 65 | 85 | 65 | 85 | |||
|
Operating short-circuit breaking capacity lecíkA) |
AC400V | 18 | 50 | 18 | 50 | 42 | 65 | 42 | 65 | |||
|
Rated residual operating current l△n(mA) |
Non-delay type | 100/300/500 | 300/500V1000 | |||||||||
| Delayed type | 100/300/500 | 300/500V1000 | ||||||||||
|
Rated residual operating current I△no(mA) |
|
|||||||||||
|
Rated residual short-circuit closing (opening) capacity I△m(kA) |
|
|||||||||||
| Operational performance (times) | Power on | 7000 | 7000 | 7000 | 7000 | |||||||
| No electricity | 10000 | 10000 | 10000 | 10000 | ||||||||
| Dimensions of the shape(mm) |
|
W | 92 | 122 | 107 | 142 | 150 | 198 | 210 | 280 | ||
| L | 150 | 150 | 165 | 165 | 257 | 257 | 280 | 280 | ||||
| H | 92 | 92 | 90 | 90 | 106.5 | 106.5 | 115.5 | 115.5 | ||||
| Shunt release | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||
| Undervoltage release | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||
| Leakage alarm unit module | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||
| Auxiliary contact | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||
| Alarm contact | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||
| Electric operating mechanism | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||
| Rotary handle operating mechanism | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ○ | ||||
2. When this series of three-pole circuit breakers is connected to a three-phase load, the load cannot have a neutral wire, otherwise the circuit breaker will malfunction;
3. When this series of three-pole circuit breakers is connected to a single-phase load, the phase wire is connected to the left pole, the neutral wire is connected to the right pole, and do not connect to the center pole.
Residual current protection action schedule four
| Residual current | I △ n | 2I △ n | 5I △ n | 10I △ n | |
|---|---|---|---|---|---|
| Non-delay type | Max OFF Time (s) | 0.2 | 0.1 | 0.04 | 0.04 |
| Delay type | Max OFF Time (s) | 0.5/1.15 | 0.35/1 | 0.25/0.9 | 0.25/0.9 |
| 2I △ limit non-driving time at n △ t (s) | - | 0.1/0.5 | - | - | |
This circuit breaker product meets the following standards:
IEC60947-2 and GB14048.2 Low voltage circuit breakers and Annex B circuit breakers with residual current protection
IEC60947-4 and GB14048.4 Contactors and motor starters
IEC60947-5. 1 and GB14048.5 Electromechanical control circuit electrical appliances
WHKM3L-125 board front wiring (three-pole, four-pole) X-X, Y-Y are three-pole circuit breaker centers
WHKM3L-125 board rear wiring (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-125 plug-in board front wiring X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-125 plug-in board rear wiring (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-250 board front wiring (three-pole, four-pole) X-X, Y-Y are three-pole circuit breaker centers
WHKM3L-400 plug-in board front wiring X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-400 plug-in board rear wiring (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-630 board front wiring (three-pole, four-pole) X-X, Y-Y are three-pole circuit breaker centers
WHKM3L-630 board rear wiring (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-630 plug-in board front wiring X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-630 rear wiring of plug-in board (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-250 board rear wiring (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-250 plug-in board front wiring X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-250 plug-in board rear wiring (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
WHKM3L-400 board front wiring (three-pole, four-pole) X-X, Y-Y are three-pole circuit breaker centers
WHKM3L-400 board rear wiring (three-pole, four-pole) X-X, Y-Y are the center of three-pole circuit breaker
Internal and External Accessories
◆ Internal accessories for circuit breakers
According to the user's needs, the circuit breaker accessories can be directly led out, or a terminal block can be installed.
Undervoltage release
Under-voltage release: AC50Hz 230V or 400V.
Wiring diagram of external undervoltage module (the wiring diagram of internal accessories of circuit breaker is in the virtual frame)
* (Undervoltage module thickness: 20 mm)
Undervoltage release power
| Distribution circuit breaker | Undervoltage Release Power (VA) | |
|---|---|---|
| AC230V | AC400V | |
| WHKM3L-125 | 2.6 | 3.3 |
| WHKM3L-250 | 3.8 | 3.3 |
| WHKM3L-400 | 3.7 | 2.7 |
| WHKM3L-630 | 2.5 | 2.8 |
When the rated working voltage is 35% ~ 70%, the undervoltage release device should reliably trip the circuit breaker;
When the rated working voltage is 85% ~ 110%, the undervoltage release shall ensure that the circuit breaker is closed;
When the rated operating voltage is less than 35%, the undervoltage release shall prevent the circuit breaker from closing.
Warning: The undervoltage release must be energized before the circuit breaker can be closed and closed again. Otherwise, the circuit breaker will be damaged!
◆ Shunt release
Wiring diagram (the wiring diagram of internal accessories of circuit breaker is in the dummy box)
K: The micro switch connected in series with the coil inside the shunt release device is a normally closed contact. When the circuit breaker is opened, the contact opens itself and closes when it is closed.
Voltage specifications: AC50Hz 230V or 400V; DC220V
Between 70 and 110% of the rated control power supply voltage, the shunt release shall reliably trip the circuit breaker.
※ (Shunt release long wire type wire length: 50mm)
(Shunt Release Terminal Type Thickness: 20 mm)
◆ Leakage alarm unit module
There are two ways, which users can explain when ordering according to their needs:
Mode 1 (represented by Ⅰ): When leakage occurs, the leakage alarm module sends a signal, and the circuit breaker trips.
Mode 2 (represented by Ⅱ): When leakage occurs, the leakage alarm module sends out a signal, but the circuit breaker does not trip.
(Note: This method is to meet the needs of special occasions. Please consider carefully when using this function to protect electrical appliances.)
Alarm contact
| Circuit breaker is in "on" and "closed" position |
|
| Position when the circuit breaker is "free trip" (alarm) |
B11, B14 transition from OFF state to ON state B11, B12 transition from the ON state to the OFF state |
Alarm contact long wire type wire length: 50mm
Alarm contact terminal type thickness: 20mm
Auxiliary contact
| When the circuit breaker is in the "off" position |
|
| When the circuit breaker is in the "closed" position |
F11, F12 transition from ON state to OFF state F11, F14 transition from OFF state to ON state |
* Auxiliary contact long wire type wire length: 50mm
Auxiliary contact terminal type thickness: 20mm
Rated current of auxiliary contact and alarm contact
| Classification |
Current rating of shell grade Inm (A) |
Agreed heating current Ith (A) |
Rating at AC400V Operating current le (A) |
Rating at DC220V Operating current le (A) |
|---|---|---|---|---|
| Auxiliary contact | ≤250 | 3 | 0.3 | 0.15 |
| ≥400 | 3 | 0.4 | 0.2 | |
| Alarm contact | 16 ≤ Inm ≤ 630 | AC220V/1A | 0.15 |
Power-on operation performance of auxiliary contacts and corresponding test conditions
| Use categories | connect | Break up |
Power-on operation No. of cycles |
Operations per minute No. of cycles |
Power-on time | ||||
|---|---|---|---|---|---|---|---|---|---|
| I/le | U/Ue |
Cos φ or T0.95 |
I/le | U/Ue |
Cos φ or T0.95 |
||||
| AC-15 | 10 | 1 | 0.3 | 1 | 1 | 0.3 | 6050 | 6 | ≥ 0. 05 s |
| DC-13 | 1 | 1 | 6Pe | 1 | 1 | 6Pe | ≥ T 0. 95 | ||
On and off capability of auxiliary contact under abnormal condition
| Use categories | connect | Break up |
Power-on operation No. of cycles |
Operations per minute No. of cycles |
Power-on time | ||||
|---|---|---|---|---|---|---|---|---|---|
| I/le | U/Ue |
Cos φ or T0.95 |
I/le | U/Ue |
Cos φ or T0.95 |
||||
| AC-15 | 10 | 1.1 | 0.3 | 10 | 1.1 | 0.3 | 10 | 2 | ≥ 0. 05 s |
| DC-13 | 1.1 | 1.1 | 6Pe | 1.1 | 1.1 | 6Pe | ≥ T 0. 95 | ||
Note: Table 1 above 2. T0.95 = 6Pe is an empirical formula, where Pe is in "watts" and T0.95 is in milliseconds.
2. When the total number of operating performances of the circuit breaker is less than 6050, the number of energized operating performances of the auxiliary contact may be equal to the total number of operating performances of the circuit breaker.
3. The operating frequency and energization time are allowed to be consistent with those of the main circuit of the circuit breaker.
◆ External accessories for circuit breakers
WHKM3L electric operating mechanism
Wiring diagram of electric operating mechanism (the internal wiring diagram of electric motor operating mechanism is in the virtual box)
Voltage specification: AC50Hz110V, 230V
DC110V, 220V
Symbol description:
SB1, SB2 operation buttons (user's own)
X Terminal Block
P1 and P2 are external power input
Starting Current, Power and Life of Electric Operating Mechanism
| Equipped circuit breaker | Starting Current (A) | Starting Power (VA) | Life (times) |
|---|---|---|---|
| WHKM3L-125 | ≤0.5 | 12 | 10000 |
| WHKM3L-250 | ≤0.5 | 12 | 8000 |
| WHKM3L-400 | ≤2 | 35 | 5000 |
| WHKM3L-630 | ≤2 | 35 | 5000 |
Note: After the circuit breaker is tripped, the electric operating mechanism must first buckle the circuit breaker before closing.
◆ Height of electric operating mechanism
| Model of circuit breaker equipped with operating mechanism |
WHKM3L-125 M, H |
WHKM3L-250 M, H |
WHKM3L-400 M, H |
WHKM3L-630 M, H |
|
|---|---|---|---|---|---|
| Height (mm) | H1 | 93.5 | 95 | 151 | 152 |
| H2 | 175.5 | 180 | 249.7 | 255 | |