Product Overview
The Onesto KC6-KU-263 is a 63A double-pole miniature circuit breaker (MCB) with a 6kA breaking capacity and C-curve characteristic. It is designed for AC electrical distribution installations where a two-pole circuit breaker is specified.
Key Features
- 63A rated current with a two-pole (2P) configuration.
- 6kA short-circuit breaking capacity for circuit protection applications.
- C-curve characteristic for the KC6-KU 6kA range.
- Rated for 240/415V AC, 50/60Hz systems.
- DIN-format miniature circuit breaker for distribution-board installations.
Applications
- Domestic electrical distribution installations where a 63A two-pole MCB is specified.
- Industrial electrical distribution applications.
- Protection and control of circuits against overloads and short circuits.
Why Choose This Product?
This Onesto MCB provides a 63A, two-pole option within the KC6-KU 6kA C-curve range. It is suitable for installers and panel builders who need a compact protective device matched to the circuit design and applicable wiring requirements.
Important Notes
- Installation and protection coordination should be completed by a qualified electrician in accordance with applicable wiring requirements.
- Select the circuit breaker rating and curve to suit the load, conductor size, fault level and overall installation design.
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Onesto |
| Model | KC6-KU-263 |
| Product Type | Miniature Circuit Breaker (MCB) |
| Rated Current | 63A |
| Poles | 2P |
| Breaking Capacity | 6kA |
| Tripping Curve | C |
| Voltage Rating | 240/415V AC |
| Frequency | 50/60Hz |
| Mounting | DIN |
| Compliance Reference | SABS in accordance with IEC 60947-2, VC8036 (as stated in the technical catalogue) |
| Pack Size | 1 |
Important:
All solar products, power systems, water heating and gas products and their components must be installed by appropriately qualified personnel. All installations must adhere to local wiring regulations and standards. Sustainable Online will not be held liable for any product malfunctions as a result of incorrectly installed systems.

