R. STAHL 8530/1-MCB-STA103-C25-000-3 Circuit Breaker
Article Number: 272180
Product Overview
The R. STAHL 8530 series circuit breakers, specifically the 8530/1-MCB-STA103-C25-000-3 model, offer robust line protection with high breaking capacities of 10, 15, or 25 kA. These components are designed for effective current limitation during short circuits, ensuring high selectivity with upstream fuses. Their modular design allows for flexible system integration, available in 1 to 4 pole versions with nominal currents from 0.5–63 A. The maximum installation capacity is 4.5 partial units (UP).
Key features include:
- Conformity to EN 60947-2 for isolation
- Energy limitation class 3
- Easy replacement and extension of existing systems due to modular design
- Simple mounting via snap-on onto a DIN rail in Ex e enclosures
- Fixed magneto-thermal trip units
- Ergonomic operating lever for safe switching
- Padlockable (accessories) to prevent re-operation during maintenance
Technical Specifications
Explosion Protection
| Application Area (Zones) | 1, 2 |
|---|---|
| Application Area (Zones) Note | Usable in Zone 21 / 22 with Ex tb / tc enclosure protection |
| IECEx Gas Certificate | IECEX FMG 19.0029U |
| IECEx Gas Explosion Protection | Ex db eb IIC Gb |
| ATEX Gas Certificate | FM19ATEX0191U |
| ATEX Gas Explosion Protection | II 2 G Ex db eb IIC Gb |
| Certificates | ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM), ATEX (FM), China (CCC) |
Electrical Characteristics
| Rated Operational Voltage AC | 230/400 V |
|---|---|
| Rated Service Current | 25 A |
| Frequency | 50/60 Hz |
| Rated Service Breaking Capacity | 10 kA |
| Electrical Service Life | 2 x 10⁴ |
| Mechanical Service Life | 2 x 10⁴ |
| 1st Auxiliary Function | None |
| Voltage 1st Auxiliary Function AC | - |
| Max. Current 1st Auxiliary Function | - |
| 2nd Auxiliary Function | None |
| Max. Voltage 2nd Auxiliary Function DC | - |
| Tripping Characteristic | C |
| Number of Poles | 3-pole |
Ambient Conditions
| Ambient Temperature | -40 °C ... 70 °C |
|---|---|
| Ambient Temperature | -40 °F ... 70 °F |
| Ambient Temperature | -40 °C ... +70 °C |
| Ambient Temperature | -40 °F ... +158 °F |
| Ambient Temperature Note | Different ambient temperatures based on current certificates, on request |
Mechanical Characteristics
| Degree of Protection (IP) (IEC 60529) | IP2X |
|---|---|
| Enclosure Material | Thermoplastic |
| Minimum Connection Terminal Size | 1.5 mm² |
| Maximum Connection Terminal Size | 25 mm² |
| Minimum AWG Connection Terminal Size | 16 AWG |
| Maximum AWG Connection Terminal Size | 4 AWG |
| 2nd Connection Terminal Size Min. | 1.5 mm² |
| 2nd Connection Terminal Size Max. | 10 mm² |
| 2nd AWG Connection Terminal Min. | 16 AWG |
| 2nd AWG Connection Terminal Max. | 8 AWG |
| Minimum Tightening Torque | 2 N·m |
| Maximum Tightening Torque | 3 N·m |
| Connection Terminal Note | Connection of 2 conductors (upper and lower chamber simultaneously): Upper and lower chamber max. 16 / 10 mm² (Connection can be made with a maximum section difference between the upper and lower chamber.) Permitted combination possibilities for connection terminals are indicated in the operating instructions. |
Dimensions
| Width | 83 mm (3.27 in) |
|---|---|
| Length | 165 mm (6.5 in) |
| Mounting Depth | 138.3 mm (5.44 in) |
Weight
| Weight | 1.4 kg (3.087 lb) |
|---|
Mounting / Installation
| Tightening Torque | 2–3 N·m |
|---|---|
| Tightening Torque in lbf·in | 17.7 ... 26.6 lbf·in |
| Auxiliary Contact Tightening Torque | 0.4–0.6 N·m |
| Auxiliary Contact Tightening Torque lbf·in | 3.5 ... 5.3 lbf·in |
Technical Drawings
Technical drawings and dimension plans are provided, showing the overall dimensions and layout of the circuit breaker. These include details on terminal connections and tripping characteristics curves.
Tripping Characteristic Curve C: A graph illustrates the tripping time in seconds versus multiples of the rated current (I/In) for both AC and DC circuits, indicating the behavior of the circuit breaker under overload conditions.
Dimensional Drawings: Detailed diagrams show the width, height, and depth of the unit, including mounting dimensions and the space required for installation (e.g., 8530/1; 3 division units).
Accessories
The following accessories are available:
| Accessory | Description | Article Number |
|---|---|---|
| Quadruple Locking Device | A locking/unlocking system that allows individual locking of the component using up to 4 cylinder locks. | 227232 |
| Fixing Kit | A fixing kit for mounting the component onto a mounting plate without a DIN rail. | 276618 |
| Cylinder Lock | For locking (shackle Ø 3) | 107115 |
Note: Technical characteristics, dimensions, weights, construction types, and delivery possibilities are subject to change without notice. Figures are for indicative purposes only.
