Application
Low voltage distribution protection
●WDM3, WDM3E, and WDM3L distribution circuit breakers can be used for AC 50HZ / 60Hz TN, TT, IT distribution system, meeting the requirements of GB50054 on "selection of electrical appliances".
●CM3DC circuit breakers can be used in DC ungrounded, negative grounded, and center grounded systems, such as in combiner boxes and inverters for photovoltaic systems.
Motor circuit protection
●WDM3, WDM3E, and WDM3L motor protection circuit breakers can provide overcurrent protection for motor starters, cables, and motors.
●The WDM3-250C, 100C, and WDM3-63 circuit breakers have a thickness of only 60mm and can be installed in the equipment control box to protect the equipment.
Residual current protection
●The WDM3L circuit breaker provides protection against dangerous voltage exposure to humans due to insulation damage, as well as protection against ǁre hazards caused by insulation damage, such as insulation damage to cables.
●The WDM3L circuit breaker with a rated residual operating current of 30mA can provide additional protection for direct contact with humans.
●The WDM3L circuit breaker can provide A-type residual current protection function for AC superimposed pulsating DC situations.
●Provide AC690V residual current protection solution.
●The conǁguration of the automatic reclosing module can achieve the function of automatic reclosing of residual current.
Switching functions
●The installation of two CM3 circuit breakers with mechanical interlocking mechanisms can achieve manual switching between two power sources of the same equipment or two devices with different power sources.
●The two circuit breakers of mechanical and electrical interlocking are equipped with controllers to achieve automatic switching of two power sources (see sample data of CA1/CA18 series automatic transfer switches)
Photovoltaic grid connection
●The CM3 circuit breaker with a dedicated undervoltage release for photovoltaic grid connection meets the Q/GDW1972 and Q/GDW1973 standards of State Grid Corporation of China, and can achieve automatic closing function for voltage detection.
Thermal magnetic circuit breaker communication
●The CM3 circuit breaker conǁgured with the FZT3 status upload module can obtain three position status signals of on/off, off/off, and control the circuit breaker on/off on the upper computer, realizing the communication function of the thermal magnetic circuit breaker.
The circuit breaker meets the following standards:
●IEC60947-1 and GB 14048.1-2006 General Principles for Low Voltage Switchgear and Control Equipment
●IEC60947-2 and GB 14048.2-2008 Low voltage switchgear and control equipment circuit breakers
●IEC60947-4-1 and GB 14048.4-2010 Low voltage switchgear and control equipment Electromechanical contactors and motor starters (including motor protectors)
Main parameters
| WDM3 (Fixed type) | WDM3E (Electronic type) | WDM3L (residual current operated) | WDM3DC (DC/PVtype) |
 |  |  |  |
WDM3 main technical performance indicators
| Frame grade rated current Inm(A) | 63 | 100 | 250 | |||||||||
| Model | WDM3-63L | WDM3-63M | WDM3-100C | WDM3-100L | WDM3-100M | WDM3-100H | WDM3-250C | WDM3-250L | WDM3-250M | WDM3-250H | ||
| Number of poles | 3/4 | 3 | 3 | 4 | 3/4 | 3/4 | ||||||
| Rated current In(A) | 10/16/20/25/ 32/40/50/63 | 10/16/20/25/32/ 40/50/63/80/100 | 100/125/140/160/ 180/200/225/250 | |||||||||
| Rated insulation voltage Ui(V) | 800 | 800 | 800 | |||||||||
| Rated impulse withstand voltage Uimp(V) | 8000 | 8000 | 8000 | |||||||||
| Rated operating voltage Ue(V)50/60Hz | AC400 | AC400 | AC400 | AC400 | AC400 | AC400 | AC400 | AC400 | ||||
| AC480 | AC500 | AC500 | ||||||||||
| AC690 | AC690 | AC690 | ||||||||||
| Flashover distance(mm) | ≯50(0)² | ≯50(0)² | ≯50(0)² | |||||||||
| AC400V | 35 | 50 | 35 | 50 | 70 | 100 | 35 | 50 | 70 | 100 | ||
| Rated limit short circuit | AC480V | 10 | ||||||||||
| Division capacity Icu(kA) | AC500V | 40 | 40 | |||||||||
| AC690V | 10 | 20 | 20 | |||||||||
| AC400V | 22 | 35 | 22 | 35 | 50 | 70 | 25 | 35 | 50 | 75 | ||
| Rated operating short circuit | AC480V | 10 | ||||||||||
| Separation capacity Ics(kA) | AC500V | 40 | 50 | |||||||||
| AC690V | 6 | 10 | 15 | |||||||||
| Usage categories | A | A | A | |||||||||
| Electrical life(times)1 | AC400V | 8000 | 8000 | 8000 | ||||||||
| AC690V | 1500 | 1000 | ||||||||||
| Mechanical life(times)' | maintenance free | 20000 | 20000 | 20000 | ||||||||
| Maintained | 40000 | 40000 | 40000 | |||||||||
| Dimensions (mm) | Wide (3 pole/4 pole) | 75/100 | 75/100 | 92/122 | 105/140 | 107/142 | ||||||
| Long | 160 | 130 | 150 | 165 | 165 | |||||||
| High | 60 | 60 | 83 | 60 | 103 | |||||||
| Frame grade rated current Inm(A) | 400 | 630 | 800 | |||||||||
| Model | WDM3-400C | WDM3-400L | WDM3-400M | WDM3-400H | WDM3-630C | WDM3-630L | WDM3-630M | WDM3-630H | WDM3-800L | WDM3-800M | WDM3-800H | |
| Number of poles | 3 | 3/4 | 3 | 3/4 | 3/4 | |||||||
| Rated current In(A) | 225/250/315/350/400 | 400/500/630 | 400/500/ 630/700/800 | |||||||||
| Rated insulation voltage Ui(V) | 800 | 800 | 800 | |||||||||
| Rated impulse withstand voltage Uimp(V) | 8000 | 8000 | 8000 | |||||||||
| Rated operating voltage Ue(V)50/60Hz | AC400 | AC400 | AC400 | AC400 | AC400 | AC400 | AC400 | AC400 | AC400 | |||
| AC500 | AC500 | AC500 | ||||||||||
| AC690 | AC690 | AC690 | ||||||||||
| Flashover distance(mm) | ≯100(0)² | ≯100(0)² | ≯100(0)² | |||||||||
| AC400V | 35 | 50 | 70 | 100 | 35 | 50 | 70 | 100 | 65 | 75 | 100 | |
| Rated limit short circuit | AC480V | 100 | ||||||||||
| Division capacity Icu(kA) | AC500V | 50 | 50 | |||||||||
| AC690V | 20 | 20 | 30 | |||||||||
| AC400V | 25 | 35 | 50 | 75 | 25 | 35 | 50 | 75 | 65 | 75 | 75 | |
| Rated operating short circuit | AC480V | |||||||||||
| Separation capacity Ics(kA) | AC500V | 50 | 50 | |||||||||
| AC690V | 15 | 15 | 20 | |||||||||
| Usage categories | A | A | A | |||||||||
| Electrical life(times)1 | AC400V | 7500 | 7500 | 7500 | ||||||||
| AC690V | 1000 | 1000 | 500 | |||||||||
| Mechanical life(times)' | maintenance free | 10000 | 10000 | 10000 | ||||||||
| Maintained | 20000 | 20000 | 20000 | |||||||||
| Dimensions (mm) | Wide (3 pole/4 pole) | 105 | 150/198 | 182 | 182/240 | 210/280 | ||||||
| Long | 257 | 270 | 280 | |||||||||
| High | 106.5 | 110 | 115.5 | |||||||||
The AC690V breaking capacity data is for reference only. The latest ceDžiǁed data parameters of our company's products shall prevail.
Note:
1)According to GB14048.1, the term "life" refers to the number of operating cycles that the electrical industLj can complete in repairing or replacing parts.
2)The Optional zero ǃashover covers with heights are 4mm (WDM3 63L/M, WDM3-100C), 6.2mm (WDM3-100L/M/H), 8mm (WDM3-250C), and 7.5mm (WDM3-250L/M/H). 9.3mm (WDM3-400C/L/M/H, WDM3-630C/L/M/H), 9.5mm (WDM3-800L/M/H)
WDM3E main technical parameters
| Frame Size | 100 | 250 | |||||
| Model | WDM3E-100M | WDM3E-100H | WDM3E-100 | WDM3E-250M | WDM3E-250H | WDM3E-250 | |
| Number of poles | 3 | 4 | 3 | 4 | |||
| Rated current In(A) | 32(12.5~32) 63(25-63) 100(40-100) | 250(100~250) | |||||
| Rated insulation voltage Ui(V) | 800 | 800 | |||||
| Rated impulse withstand voltage Uimp(V) | 8000 | 8000 | |||||
| Rated operating voltage Ue(V) 50/60Hz | AC400 | AC400V | AC400 | AC400V | |||
| AC690 | AC690 | ||||||
| Flashover distance (mm) | ≯50(0)² | ≯50(0)² | |||||
| Rated limit short circuit | AC400V | 50 | 85 | 50 | 50 | 85 | 50 |
| Breaking capacity Icu(kA) | AC690V | 20 | 20 | ||||
| Rated operating short circuit | AC400V | 35 | 50 | 35 | 35 | 50 | 35 |
| Breaking capacity Ics(kA) | AC690V | 10 | 10 | ||||
| Rated short-time withstand current Icw(kA)/1s | - | - | |||||
| Usage categories | A | A | |||||
| Electrical life(times) | AC400V | 8000 | 8000 | ||||
| AC690V | 1500 | 1000 | |||||
| Mechanical life(times) | maintenancefree | 20000 | 20000 | ||||
| Maintained | 40000 | 40000 | |||||
| Dimensions (mm) | Wide (3 pole/4 pole) | 92 | 122 | 107 | 142 | ||
| long | 150 | 165 | |||||
| high | 92 | 90 | |||||
| Frame Size | 400 | 630 | 800 | |||||||
| Model | WDM3E-400M | WDM3E-400H | WDM3E-400 | WDM3E-630M | WDM3E-630H | WDM3E-630 | WDM3E-800M | WDM3E-800H | WDM3E-800 | |
| Number of poles | 3 | 4 | 3 | 4 | 3 | 4 | ||||
| Rated current In(A) | 400(160~400) | 630(250~630) | 800(315~800) | |||||||
| Rated insulation voltage Ui(V) | 800 | 800 | 800 | |||||||
| Rated impulse withstand voltage Uimp(V) | 8000 | 8000 | 8000 | |||||||
| Rated operating voltage Ue(V) 50/60Hz | AC400 | AC400V | AC400 | AC400V | AC400 | AC400V | ||||
| AC690 | AC690 | AC690 | ||||||||
| Flashover distance (mm) | ≯100(0)² | ≯100(0)² | ≯100(0)² | |||||||
| Rated limit short circuit | AC400V | 65 | 100 | 65 | 65 | 100 | 65 | 75 | 100 | 75 |
| Breaking capacity Icu(kA) | AC690V | 20 | 20 | 30 | ||||||
| Rated operating short circuit | AC400V | 42 | 65 | 42 | 42 | 65 | 42 | 50 | 65 | 50 |
| Breaking capacity Ics(kA) | AC690V | 15 | 15 | 20 | ||||||
| Rated short-time withstand current Icw(kA)/1s | 5 | 8 | 10 | |||||||
| Usage categories | B | B | B | |||||||
| Electrical life(times) | AC400V | 7500 | 7500 | 7500 | ||||||
| AC690V | 1000 | 1000 | 500 | |||||||
| Mechanical life(times) | maintenancefree | 10000 | 10000 | 10000 | ||||||
| Maintained | 20000 | 20000 | 20000 | |||||||
| Dimensions (mm) | Wide (3 pole/4 pole) | 150 | 198 | 210 | 280 | 210 | 280 | |||
| long | 257 | 280 | 280 | |||||||
| high | 106.5 | 115.5 | 115.5 | |||||||
Note:
1)According to GB14048.1,the term "life"means the life that an electrical appliance can complete before repair or replacement of parts.
The probability of the number of operating cycles.The breaking capacity data is for reference only,and the specific parameters shall be subject to the latest certified data parameters of our company's products.2)Optional zero flashover covers with heights of 6mm (WDM3E-100),7.5mm (WDM3E-250),9.3mm (WDM3E-400),and 9.5mm (WDM3E-630/800)to achieve zero flashover.
WDM3L main parameters
| Frame Size | 100 | 250 | ||||||
| Model | WDM3L-100M | WDM3L-100H | WDM3L-100 | WDM3L-250M | WDM3L-250H | WDM3L-250 | ||
| Number of poles | 3 | 4 | 3 | 4 | ||||
| Rated current In(A) | 10/16/20/25/32/40/ 50/63/80/100 | 100/125/140/160/ 180/200/225 | ||||||
| Rated insulation voltage Ui(V) | 800 | 800 | ||||||
| Rated impulse withstand voltage Uimp(V) | 8000 | 8000 | ||||||
| Rated operating voltage Ue(V)50/60Hz | AC400V | AC400V | ||||||
| Flashover distance(mm) | ≯50(0)² | ≯50(0)² | ||||||
| Rated ultimate short circuit breaking capacity Icu(kA) | 50 | 85 | 50 | 50 | 85 | 50 | ||
| Rated operating short-circuit breaking capacity Ics (kA) | 35 | 50 | 35 | 35 | 50 | 35 | ||
| Rated residual operating current | AC type residual current protection Type A residual current protection | U-type tripper,non-delay | 0.03/0.1/0.3/0.50.03 0.1/0.3/0.5 | 0.03/0.1/0.3/0.50.03 0.1/0.3/0.5 | ||||
| V-type release,non-delay, delay adjustable | 0.1/0.3/0.5 | 0.1/0.3/0.5 | ||||||
| W-type release,non-delay, delay adjustable | 0.3/1/3/10 | 0.3/1/3/10 | ||||||
| VA-type release,non-delay, delay adjustable | 0.1/0.3/0.5 | 0.1/0.3/0.5 | ||||||
| Rated residual non-operating current I△no(A) | 1/2 IΔn | 1/2 IΔn | ||||||
| Rated residual short circuit making (breaking)capacity IAm(kA) | 1/4 IΔn | 1/4 IΔn | ||||||
| Usage categories | A | A | ||||||
| Electrical life(times)' | 8000 | 8000 | ||||||
| Mechanical life(times)' | Maintenance free | 20000 | 20000 | |||||
| Maintained | 40000 | 40000 | ||||||
| Dimensions(mm) | Width | 92 | 122 | 107 | 142 | |||
| Length | 150 | 165 | ||||||
| Height | 92 | 90 | ||||||
| Frame Size | 400 | 630 | ||||||
| Model | WDM3L-400M | WDM3L-400H | WDM3L-400 | WDM3L-630M | WDM3L-630H | WDM3L-630 | ||
| Number of poles | 3 | 4 | 3 | 4 | ||||
| Rated current In(A) | 225/250/315/350/400 | 400/500/630 | ||||||
| Rated insulation voltage Ui(V) | 800 | 800 | ||||||
| Rated impulse withstand voltage Uimp(V) | 8000 | 8000 | ||||||
| Rated operating voltage Ue(V)50/60Hz | AC400V | AC400V | ||||||
| Flashover distance(mm) | ≯100(0)² | ≯100(0)² | ||||||
| Rated ultimate short circuit breaking capacity Icu(kA) | 65 | 100 | 65 | 65 | 100 | 65 | ||
| Rated operating short-circuit breaking capacity Ics (kA) | 42 | 65 | 42 | 42 | 65 | 42 | ||
| Rated residual operating current | AC type residual current protection Type A residual current protection | U-type tripper,non-delay | - | - | ||||
| V-type release,non-delay, delay adjustable | 0.1/0.3/0.5 | 0.1/0.3/0.5 | ||||||
| W-type release,non-delay, delay adjustable | 1/3/10/30 | 1/3/10/30 | ||||||
| VA-type release,non-delay, delay adjustable | 0.1/0.3/0.5 | 0.1/0.3/0.5 | ||||||
| Rated residual non-operating current I△no(A) | 1/2 IΔn | 1/2 IΔn | ||||||
| Rated residual short circuit making (breaking)capacity IAm(kA) | 1/4 IΔn | 1/4 IΔn | ||||||
| Usage categories | A | A | ||||||
| Electrical life(times)' | 7500 | 7500 | ||||||
| Mechanical life(times)' | Maintenance free | 10000 | 10000 | |||||
| Maintained | 20000 | 20000 | ||||||
| Dimensions(mm) | Width | 150 | 198 | 210 | 280 | |||
| Length | 257 | 280 | ||||||
| Height | 106.5 | 115.5 | ||||||
The breaking capacity data is for reference only,and the specific parameters shall be subject to the latest certified data parameters of our company's products.
Note:
1)According to GB14048.1.The term "life"indicates the probability of the number of operating cycles that an electrical appliance completes before repair or replacement of parts,
2)Optional zero flashover heights of 6mm (WDM3L-100),7.5mm (WDM3L 225),9.3mm (WDM3L-400),9.5mm (WDM3L-630)respectively to achieve zero flying fox.
3)When the wooden series three-level circuit breaker is connected to a three-phase load,the load cannot have a neutral wire,including the load control loop power supply taken from the load end of thecircuit breaker,or the circuit breaker will malfunction.
4)When the third-level and fourth-level circuit breakers of this series are connected to a single-phase load,connect the phase line to pole and the neutral line to pole C,do not connect pole B
Main parameters
| Frame Size | WDM3DC-250 | WDM3DC-315 | WDM3DC-400 | WDM3DC-630 | WDM3DC-800 | ||||||
| Rated current (A) | 63A/80A/100A/125AV/140A/160A 180A/200A/225A/250A | 250A/315A 350A/400A | 400A/500A/630A | 630A/700A/800A | |||||||
| Rated insulation voltage Ui(V) | 1500V | ||||||||||
| Rated impulse withstand voltage (kV) | 12kV | ||||||||||
| Type | DC | PV | DC | PV | DC | PV | DC | PV | DC | PV | |
| Rated working voltage (V) | 2p | DC250V/DC500V/DC750V DC1000V/DC1500V | DC250V/DC500V/DC750V/DC1000V/DC1500V | ||||||||
| 3p | DC1000V/DC1250V/DC1500V | DC1000V/DC1500V | |||||||||
| Rated ultimate shoDž-circuit breaking capacity (kA) | 2p | DC1000V (2P): 15 DC1500V (2P): 5 | DC250V DC500V (2P) 50 DC750V DC1000V (2P) 25 DC1500V (2P) 7.5 | DC1000V (2P): 15 DC1500V (2P): 5 | DC250V DCS00V (2P) 50 DC750V DC1000V (2P) 25 DC1500V (2P) 7.5 | DC250V DC500V (2P): 25 DC750V DC1000V (2P): 15 DC1500V (2P): 10 | DC250V DC500V (2P): 50 DC750V DC1000V (2P): 25 DC1500V (2P): 10 | DC250V DC500V (2P): 25 DC750V DC1000V (2P): 15 DC1500V (2P): 10 | DC250V DC500V (2P): 50 DC750V DC1000V (2P): 25 DC1500V (2P): 10 | DC250V DC500M (2P) 25 DC750V DC1000W (2P): 15 DC1500V (2P): 10 | DC250V DC500V (2P): 50 DC750V DC1000V (2P): 2 DC1500V (2P): 10 |
| 3p | DC1500V (3P): 20 | DC1000V DC1250V DC1500V (3P) 25 | DC1500V (3P E): 20 | DC1000V DC1250V DC1500V (3P): 25 | DC1000V (3P): 30 DC1500V (3P): 25 | DC1000V (3P): 40 DC1500V (3P ): 30 | DC1000V (3P): 30 DC1500V (3P): 25 | DC1000V (3P): 40 DC1500V (3P): 30 | DC1000V (3P): 30 DC1500V (3P): 25 | DC1000V (3P): 40 DC1500V (3P): 30 | |
| Rated operating shoDž-circuit breaking capacity (kA) | 2p | 100％lcu | |||||||||
| 3p | |||||||||||
| Isolation function | Yes | ||||||||||
| Selective category (cat) | A | ||||||||||
| Mechanical lifespan (times) | 20000 | 10000 | |||||||||
| Electrical lifespan (times) | 1500 | 1000 | 800 | 500 | |||||||
| Flashover distance | 2p | ≤50 | ≤100 | ≤50 | ≤100 | ≤100 | |||||
| 3p | 200×73×135 | 270×130×156 | |||||||||
| External dimensions (mm) | 200×107×135 | 310×182×156 | |||||||||
