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Bowser Electric
Bowser Electric
High-performance Air Circuit Breakers for power distribution
Air Circuit Breakers are suitable for AC 50Hz, rated voltage up to 660V (690V) and below, rated current 400A-6300A in the power distribution network, used to distribute power and protect the lines and power supply equipments from the hazards of overloading, undervoltage, short-circuiting, single-phase grounding and other faults. The circuit breaker has intelligent protection function and precise selective protection, which can improve the reliability of power supply and avoid unnecessary power outage. Meanwhile with open communication interface, it can be four remote to meet the requirements of centralized control center and automation system. The circuit breaker has an impulse withstand voltage of 8000V at an altitude of 2000 meters (different altitudes are corrected according to the standard, up to 12000V). The circuit breaker can be used as an isolator without intelligent disconnectors and sensors. Optional ACB supporting RS485/RS232 communication.
Outstanding features that ensure absolute safety and efficiency
Optimized to improve power supply reliability
It is used to distribute electrical energy and protect lines and power supply equipment from overload, undervoltage, short circuit and other faults.
Detailed model comparisons and ratings
| MODEL | LJW1-2000 | LJW1-3200 | LJW1-4000 | LJW1-6300 | Note | |
|---|---|---|---|---|---|---|
| Shell frame class rated current (InmA) | 2000A | 3200A | 4000A | 6300A | ||
| Rated current (lnA) | 400A, 630A, 800A, 1000A, 1250A, 1600A, 2000A | 2000A, 2500A, 2900A, 3200A | 3200A, 3600A, 4000A | 4000A, 5000A, 6300A | ||
| Pole | 3P, 4P | |||||
| Frequency (HZ) | 50 | 50 | 50 | 50 | ||
| Rated ultimate short circuit breaking capacity Icu (KA) O-CO | 400V | 80 | 100 | 120 | 120 | |
| 690V | 50 | 65 | 85 | 85 | ||
| Rated short-circuit turn-on capacity nxlcu (KA) COSΦ | 400V | 176/0.2 | 220/0.2 | 220/0.2 | 264/0.2 | |
| 690V | 105/0.25 | 143/0.2 | 165/0.2 | 187/0.2 | ||
| Rated operating short circuit breaking capacity Ics (KA) O-CO-CO | 400V | 50 | 65 | 120 | 120 | |
| 690V | 40 | 65 | 85 | 75 | ||
| Rated short-time withstand current lcw (KA) 1s, delay 0.4s, O-CO | 400V | 50 | 65 | 65/80(MCR) | 85/100(MCR) | |
| 690V | 40 | 50 | 50/60(MCR) | 65/75(MCR) | ||
| Intelligent Controller | L: Economy M: Ordinary type H: Premium | |||||
| Installation | Drawer type, Fixed | |||||
| Control circuit voltage | AC220V, AC380V, DC110V, DC220V | |||||
| Other configurations |
1. Undervoltage instantaneous release device 2. Undervoltage time-delay tripper 3. Phase separator 4. Mechanical interlock (lever) 5. Mechanical interlock (steel cable) 6. One lock and one key 7. Two locks and one key 8. Three locks and two keys 9. Auxiliary contact form 10. Door frame 11. Horizontal wiring 12. Vertical wiring |
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Advanced testing equipment and manufacturing standard processes
Certified high quality standards and structured categorization
Answers to common product and service inquiries
A1: All inquiries will be processed and replied to within 24 hours.
A2: Yes, product samples can be provided for quality evaluation. Samples are a reliable way to build trust and verify specifications.
A3: Yes, both OEM and ODM custom solutions are fully supported and welcomed.
A4: Standard sample delivery takes approximately 2-3 days, while bulk production and delivery require 7-15 days.
A5: We support EXW, FOB, CFR, CIF, and DDU trade terms.
A6: All goods undergo 100% testing prior to shipment. A 2-4 year warranty is provided on all items, and standard resolution proposals are issued within 5 days for quality complaints.
