MCB miniature circuit breakers (UL)
ABB S503-K3
Miniature circuit breaker 3P 3 A, K curve, UL 1077 high-performance supplementary protector
- Brand
- ABB
- Part number
- S503-K3
- Product group
- MCB miniature circuit breakers (UL)
- Series
- S500
- Number of poles
- 3
- Rated current In
- 3 A
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Specifications
| Trip curve | K |
|---|---|
| Standard | UL 1077 |
| Rated voltage | up to 480 V AC |
| Interrupting rating | 50 kA (IEC) |
| Mounting | DIN rail |
Datasheet, stock and lead time on request. If this part is discontinued or on long lead time we offer an approved equivalent.
Equivalents from other makers (5)
What this part is
| Type | Miniature circuit breaker (MCB) |
|---|---|
| Rated current | 3 A |
| Trip curve | K |
| Poles | 3 |
| Breaking capacity (this part) | 50 kA |
Parts listed here share these values. Matching one value alone (for example the current) does not make a replacement.
Check before you substitute
- Breaking capacity (kA) at the same voltage and to the same standard (IEC 60898-1 or IEC 60947-2)
- Busbar type (pin or fork), terminal size and module width
- Accessories: auxiliary, shunt trip, locking
- Approval required on site (SASO, IEC, UL)
- ABB S203-K3Miniature circuit breaker 3P 3 A, K curve, UL 1077 supplementary protectorABB
- ABB S203MUC-K3Miniature circuit breaker 3P 3 A, K curve, UL 1077 AC/DC supplementary protectorABB
- ABB S203P-K3Miniature circuit breaker 3P 3 A, K curve, UL 1077 supplementary protector, high performanceABB
- ABB S503UC-K3Miniature circuit breaker 3P 3 A, K curve, UL 1077 AC/DC high-performance supplementary protectorABB
- ABB SU203M-K3Miniature circuit breaker 3P 3 A, K curve, UL 489 current-limiting branch circuit breakerABB
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