Pronto Energy 
KNM1 AC Moulded Case Circuit Breaker (MCCB)
The KNM1 4P 16-63A AC moulded case circuit breaker provides overload, short-circuit and isolation protection for distribution and motor circuits. Compliant with IEC 60947-2, it handles high fault currents in commercial and industrial installations.
Applications & circuit protection
The KNM1 AC MCCB is designed for main and sub-distribution protection in commercial buildings, industrial plants and infrastructure projects, offering reliable breaking performance for high-current feeders.
- Main and sub-distribution switchboards
- Motor circuits and industrial feeders
- Commercial building power distribution
- Isolation and protection of high-current circuits
Construction & operating reliability
The KNM1 combines a high-breaking mechanism, thermal-magnetic protection and a robust moulded housing, with flexible vertical or horizontal installation for different panel layouts.
- Overload, short-circuit and undervoltage protection
- Vertical or horizontal installation
- High breaking capacity for industrial feeders
- Robust moulded case construction
Technical Parameter
| Parameter | Value |
| Compliant with standards | IEC 60947-2 |
| Application | AC distribution and motor circuits; overload, short-circuit and undervoltage protection |
| Number of product poles | 4P |
| Rated working current | 16–63A |
| Rated working voltage | 400 V AC |
| Rated insulation voltage | 500 V |
| Rated frequency | 50 Hz |
| Installation orientation | Vertical or horizontal |
| Isolation function | Yes |
Standards & certifications
The KNM1 is designed in accordance with IEC 60947-2 and is available with CB, CE certifications. Certification documentation can be provided according to project and destination-market requirements.
- Standard: IEC 60947-2.
- Certifications: CB, CE.
- Protection level: IP20 (where applicable).
OEM & B2B supply support
KORLEN supports distributors, OEM manufacturers, electrical contractors and project buyers with product selection, samples, technical documentation and commercial quotations.
If the KNM1 configuration does not match your project, send us the required specifications, quantity and destination market. Our team can help identify a suitable configuration.
- Samples available for product evaluation.
- Flexible quantities for project and B2B purchasing.
- OEM and ODM support for suitable projects.
- Technical documentation and certification support available.
Frequently Asked Questions
The KNM1 moulded case circuit breaker protects AC distribution and motor circuits against overload and short circuit, and provides isolation capability.
The KNM1 covers 16-63A, with adjustable thermal-magnetic protection for flexible coordination.
It is installed in distribution switchboards and panel boards, with vertical or horizontal mounting supported.
The KNM1 complies with IEC 60947-2 for circuit-breaker performance in industrial applications.
