LMB1-63 MCB
LMB1‑63 miniature circuit breaker (MCB) provides reliable thermo‑magnetic overload & short‑circuit protection. Rated 6‑63A, 1P‑4P poles, 6kA breaking capacity with B/C/D trip curves. Standard 35 mm DIN‑rail mounting, compliant with IEC 60898‑1 for residential and commercial low‑voltage distribution systems。
价格范围：$1.00 至 $4.00
Product Overview
LMB1‑63 series miniature circuit breaker (MCB) is a modular DIN‑rail‑mounted low‑voltage protection device designed for AC 230/400V 50/60Hz power distribution systems. It delivers dual thermo‑magnetic protection: thermal delayed tripping for overload and instantaneous magnetic tripping for short‑circuit faults, safeguarding wiring, home appliances and electrical equipment from overcurrent damage and fire risks.
Unlike disposable fuses, MCB can be manually reset after fault clearance, lowering long‑term maintenance cost. Compact modular design saves cabinet space, supports quick installation and replacement for new projects or renovation upgrades. Multiple trip characteristics (B, C, D) and wide current range 6A‑63A meet diverse load requirements for household, commercial and light‑industrial sites.
Key Features
- Dual thermo‑magnetic tripping: overload long‑delay + short‑circuit instant protection
- Rated breaking capacity: 6kA, poles: 1P / 2P / 3P / 4P
- Trip curve options: B, C, D for different load conditions
- Rated current: 6A‑63A; Rated voltage: AC230‑400V, 50/60Hz
- Universal 35 mm DIN rail mounting, easy installation
- High‑impact flame‑retardant polycarbonate housing
- Clear ON/OFF status indicator for quick visual inspection
- Compliant with IEC 60898‑1 international standard
- Long mechanical & electrical service life, stable performance
- Support OEM & custom marking for bulk orders
Technical Specifications
| Item | Parameter |
|---|---|
| Brand | LVMA |
| Model | LMB1‑63 |
| Standard | IEC 60898‑1 |
| Rated Voltage | AC 230V / 400V |
| Rated Current | 6‑63A |
| Frequency | 50/60Hz |
| Breaking Capacity | 6 kA |
| Poles | 1P, 2P, 3P, 4P |
| Trip Characteristic | B / C / D Curve |
| Mounting | 35 mm DIN Rail |
| Housing Material | Flame‑retardant PC |
Typical Applications
✅ Residential distribution boards, household socket & lighting circuits ✅ Commercial buildings, office, retail store secondary distribution ✅ Light‑industry control cabinets, small machinery branch protection ✅ Building renovation, replace old fuse protection systems ✅ General AC low‑voltage branch circuit protection
Why Choose LMB1‑63 MCB
- Strict batch‑by‑batch factory testing before shipment for consistent quality
- Multiple current & pole options, flexible project matching
- Flame‑retardant shell improves safety under abnormal working conditions
- Compact modular structure reduces cabinet space occupation
- Fast lead‑time, support bulk wholesale & customized service
FAQ
Q1: What is the difference between B, C and D curve MCB?
A: B curve: 3‑5×In instantaneous trip, for sensitive electronic loads. C curve: 5‑10×In, most‑used for lighting & socket circuits. D curve: 10‑20×In, for motor loads with high inrush starting current。
Q2: Can this AC MCB be used for DC solar circuits?
A: No. This LMB1‑63 is AC‑type only. For PV DC circuits, please select LVMA dedicated DC MCB series to avoid arc‑extinguishing risks。
Q3: Is it compatible with standard DIN rail distribution boxes?
A: Yes, fits global standard 35 mm DIN rail, widely compatible with most distribution enclosures.
Q4: What is the service life?
A: Mechanical life ≥10000 cycles; Electrical life ≥6000 cycles under rated working condition。
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