ABB ST203M-Z3 ST200M Miniature Circuit Breaker, 3-Pole, 3A, Z Curve, 10kA, UL 1077
ABB
$160.94
ABB ST203M-Z3 ST200M Miniature Circuit Breaker, 3-Pole, 3 A, Z Curve
The ABB ST203M-Z3 is a 3-pole miniature circuit breaker from the ABB ST200M series, rated 3 A with a Z tripping characteristic and a 10 kA breaking capacity. It is recognized to UL 1077 as a supplementary protector, providing overcurrent protection inside equipment and control panels where branch circuit protection is already provided upstream.
The Z curve trips instantaneously at 2 to 3 x In, which makes it a strong fit for semiconductors, measuring circuits and sensitive electronics. Automation Distribution supplies the ST203M-Z3 as an authorized ABB distributor.
Key Features
- 3-pole construction, rated current 3 A
- Z tripping characteristic, magnetic trip at 2 to 3 x In
- 10 kA breaking capacity
- Thermal trip for overload protection and electromagnetic trip for short-circuit protection
- 35 mm DIN rail mounting
- UL 1077 recognized supplementary protector
Specifications
| Manufacturer | ABB |
| Part Number | ST203M-Z3 |
| Series | ST200M |
| Product Type | Miniature Circuit Breaker |
| Number of Poles | 3 |
| Rated Current | 3 A |
| Tripping Characteristic | Z curve (2 to 3 x In) |
| Breaking Capacity | 10 kA |
| Voltage Rating | (240 V AC) / (125 V DC) |
| Interrupt Rating (UL) | (240 V AC) 10 kA / (480Y / 277 VAC) 10 kA / (125 V DC) 10 kA |
| UL Standard | UL 1077 (supplementary protector) |
| Mounting | 35 mm DIN rail |
Part Number Breakdown: ST203M-Z3
| Code | Meaning |
|---|---|
| ST203M | ST200M series, 3-pole |
| Z | Tripping characteristic: Z curve |
| 3 | Rated current: 3 A |
Typical Applications
The ST203M-Z3 is typically selected for semiconductors, measuring circuits and sensitive electronics, as supplementary protection for PLC power supplies, control circuits and individual loads inside panels.
Authorized ABB Distributor. Automation Distribution supplies genuine ABB circuit protection products. Contact our team for technical support, cross-references or volume pricing on the ST203M-Z3.
- Series:
- ST200M
- Number of Poles:
- 3
- Rated Current:
- 3 A
- Tripping Characteristic:
- Z curve (2 to 3 x In)
- Breaking Capacity:
- 10 kA
- Voltage Rating:
- (240 V AC) / (125 V DC)
- Interrupt Rating (UL):
- (240 V AC) 10 kA / (480Y / 277 VAC) 10 kA / (125 V DC) 10 kA
- UL Standard:
- UL 1077 (supplementary protector)
- Mounting:
- 35 mm DIN rail
- Spec Sheet:
- View
