Auto, modified and manual reset mini circuit breakers.
| Catalog Number | Series 21X Mini Circuit Breaker |
| Rating | 5-30A; 14Vdc |
| Interrupt Rating | 150A @ 14Vdc (5-10A versions); 225A @ 14Vdc (15A version); 300A @ 14Vdc (20A version); 450A @ 14Vdc (25-30A versions) |
| Operating Temperature Rating | –40°F (–40°C) to 185°F (85°C) |
| Storage Temperature Rating | –40°F (–40°C) to 260°F (125°C) |
| Materials | Grey UL-Rated 94V0 thermoplastic housing with metal cover: gold (Type I) or silver (Type II) |
| Marking | Standard marking includes amp/voltage ratings, part number, and date code. OCR marking is available. |
| Termination | Compatible with 280 Type fuse blocks using 0.32in. (8.1mm) centerline spacing |
| Compliances | SAE J553 Type I and Type II Circuit Breakers |