BCH MPH63-50 Motor Protection Circuit Breaker MPCB (40-50 A)
BCH MPH63-50 motor protection circuit breaker from the MPH series, relay range 40-50 A with magnetic trip at 650 A (13 x In). It combines thermal overload protection, phase failure protection and fuse-less short circuit protection in one compact unit with trip-free mechanism, temperature compensation and a rotary ON/OFF handle that moves to TRIP on short circuit or overload. Trip class 10, padlocking in OFF position, test function, 55mm frame.
Specifications
| Cat Code | MPH63-50 |
| Series / Frame | MPH63 (55 mm frame) |
| Relay Range (A) | 40-50 |
| Rated Operational Current (A) | 50 |
| Magnetic Trip Current (13 x In) (A) | 650 |
| Motor Rating 3-Phase 400/415V (kW) | 22 |
| Motor Rating 3-Phase 500V (kW) | 11 |
| Motor Rating 3-Phase 690V (kW) | 22 |
| Motor Rating 1-Phase 220-240V (kW) | 5.5 |
| Short Circuit Breaking Capacity at 230V | Icu 100 kA / Ics 100 kA |
| Short Circuit Breaking Capacity at 400/415V | Icu 50 kA / Ics 25 kA; gl/gG back-up fuse 125 A (used if Icc > Icu) |
| Short Circuit Breaking Capacity at 440V | Icu 35 kA / Ics 25 kA; gl/gG back-up fuse 100 A (used if Icc > Icu) |
| Short Circuit Breaking Capacity at 500/525V | Icu 10 kA / Ics 10 kA; gl/gG back-up fuse 80 A (used if Icc > Icu) |
| Short Circuit Breaking Capacity at 690V | Icu 10 kA / Ics 10 kA |
| Trip Class | 10 |
| Operating Frequency | 50-60Hz |
| Degree of Protection | IP20 |
| Certifications | UL |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Utilisation Category | CAT A (IEC947-2 circuit breaker); AC3 (IEC947-4-1 motor starter) |
| Ambient Temperature Compensation | Available |
| Permissible Altitude without Derating | 2000m |
| Suitable for Group Motor Protection | Yes |
| Self Protected Type E Manual Combination Starter | Yes |
| Mechanical Life (operations) | 50,000 |
| Electrical Life (operations) | 50,000 |
| Max Switching Frequency / Hour | 15 |
| Frame Size (L x B x H) | 140 x 55 x 148.5 mm |
| Conductor Cross Section - Solid Strand | 1-25mm² x1 |
| Conductor Cross Section - Without/With End Sleeve | 1-16mm² x2 |
| Terminal Type | Box Terminal - M6 |
Ordering / Variants
Magnetic-only version (no thermal release) also available, e.g. MPH63M-50. Accessories: MPHF11 front aux contact, MPHS11 side aux contact, MPHT11F2 trip indicating contact, MPH***UR under-voltage / MPH***SR shunt release, MPH64F2 door operating mechanism.
Datasheet, certificates and quotation on request - info@west-velocity.com.
