Description
CROWN Switch Fuse DO2 Modular Fuse Switch 32A/63A 1P+N/3P Excellent for DIN Rail Panel Application and Reliable Usage
The CROWN Switch Fuse Series offers a dependable modular circuit protection and switching solution designed for commercial, industrial, and residential distribution boards.
Manufactured by Crown, a trusted brand in electrical circuit devices, this series combines manual switching isolation with fused overcurrent protection using standard DO2 type fuses.
The product line encompasses various configurations, including 32 Amp and 63 Amp models across 1-Pole, 1-Pole + Neutral (1P+N), and 3-Pole options.
Engineered in accordance with IEC/EN 60947-3 standards under utilization category AC22B, these units operate reliably on 240/415V~ systems at 50Hz frequency.
They provide a rated breaking capacity of 10kA, ensuring safe interruption of fault currents within their specified operational limits.
Designed for quick installation, the switch fuses feature standard DIN rail mounting conforming to EN 50022 specifications, allowing seamless integration into consumer units and panel boards.
Terminal capacities accommodate 1-25mm² cables (and 1-16mm² for 32A 1P+N variants), while the housing delivers an IP40 protection rating once properly installed inside an enclosure.
Rated for over 2,000 electrical and mechanical operating cycles, the Crown switch fuse series delivers standard-compliant safety and dependable circuit control for power distribution networks.
Product Detail
| Specification Parameter | Details / Ratings |
| Design According |
IEC/EN 60947-3 |
| Rated Voltage |
240/415V~ |
| Rated Current |
32A, 63A |
| No. of Pole |
1P, 1P+N, 3P (Models: CA 1 PNSF, CA 2 PNSF, CA 32 PNSF, CA 61 PNSF, CA 62 PNSF) |
| Fuse Type |
DO2 |
| Utilization Category |
AC22B |
| Rated Breaking Capacity |
10kA |
| Frequency |
50Hz |
| Degree of Protection |
IP40 (after installation in board) |
| Terminal Capacity |
1-25mm², 1-16mm² (32A 1P+N) |
| Electrical & Mechanical Endurance |
>2000 operating cycles |
| Type of Mounting |
DIN rail EN 50022 |
Frequently Asked Questions (FAQ)
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Q: What is the main purpose of a switch fuse unit like the Crown CA series?
A: A switch fuse combines a mechanical switch disconnector with a fuse link, allowing you to manually disconnect power while providing dedicated short-circuit and overcurrent protection via replaceable fuses.
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Q: What type of fuses do these switch units accept?
A: The Crown switch fuse series is specifically designed to accommodate standard DO2 type fuses.
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Q: What is the difference between the 1P+N and 3P models?
A: 1P+N (1-Pole + Neutral) models switch the live line while accommodating a neutral connection for single-phase applications, whereas 3P models are built for 3-phase electrical systems (415V~).
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Q: What is the rated breaking capacity of these switch fuses?
A: They feature a rated breaking capacity of 10kA under IEC/EN 60947-3 standards (utilization category AC22B).
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Q: How are these switch fuse units installed in a distribution board?
A: They are built with standard modular housings designed for fast, secure snap-on mounting onto standard DIN rails conforming to EN 50022.
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