R. STAHL 8530/1-MCB-STA103-B25-000-3 Line Protection Circuit Breaker
Article Number: 272165
The R. STAHL 8530 series line protection circuit breakers offer excellent current limitation for short circuits and high switching capacities of 10, 15, or 25 kA. This ensures minimal load on lines and high selectivity with upstream fuses. The components are modular and 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).
Technical Specifications
Explosion Protection
| Characteristic | Value |
|---|---|
| Application Area (Zones) | 1, 2 |
| Application Area (Zones) Note | Usable in Zone 21 / 22 with Ex tb / tc enclosure protection |
| IECEx Certificate Gas | IECEx FMG 19.0029U |
| IECEx Explosion Protection Gas | Ex db eb IIC Gb |
| ATEX Certificate Gas | FM19ATEX0191U |
| ATEX Explosion Protection Gas | II 2 G Ex db eb IIC Gb |
| Certificates | ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM) |
| Certificate of Conformity | Certificate of Conformity (ATEX), China (CCC) |
Electrical Characteristics
| Characteristic | Value |
|---|---|
| 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 | B |
| Number of Poles | 3-pole |
Ambient Conditions
| Characteristic | Value |
|---|---|
| Ambient Temperature | -40 °C ... 70 °C |
| Ambient Temperature | -40 °C ... 70 °C |
| Ambient Temperature | -40 °F ... 158 °F |
| Ambient Temperature | -40°F ... +158°F |
| Ambient Temperature Note | Ambient temperatures different from the current certificates, on request |
Mechanical Characteristics
| Characteristic | Value |
|---|---|
| Degree of Protection (IP) (IEC 60529) | IP2X |
| Housing Material | Thermoplastic |
| Connection Terminal Minimum Section | 1.5 mm² |
| Connection Terminal Maximum Section | 25 mm² |
| Connection Terminal AWG Min. | 16 AWG |
| Connection Terminal AWG Max. | 4 AWG |
| Connection Terminal 2 Min. | 1.5 mm² |
| Connection Terminal 2 Max. | 10 mm² |
| Connection Terminal 2 AWG Min. | 16 AWG |
| Connection Terminal 2 AWG Max. | 8 AWG |
| Tightening Torque Min. | 2 N·m |
| Tightening Torque Max. | 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.) |
| Allowed combination possibilities for connection terminals are indicated in the operating manual. | |
| Width | 83 mm (3.27 in) |
| Length | 165 mm (6.5 in) |
| Mounting Depth | 138.3 mm (5.44 in) |
| Weight | 1.4 kg (3.087 lb) |
Mounting / Installation
| Characteristic | Value |
|---|---|
| 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 are subject to change.
Tripping Characteristic Curve
Diagram showing tripping time in seconds versus multiple of rated current (I/In) for different tripping characteristics (B, AC, DC).
The curve labeled 'B' shows a faster tripping response compared to 'AC' and 'DC' curves.
Overall Dimensions
Diagram showing the dimensions of the circuit breaker in millimeters and inches. Key dimensions include width (83 mm / 3.27 in), height (165 mm / 6.50 in), and mounting depth (138.3 mm / 5.44 in). The diagram also indicates it is a 3-pole unit and occupies 3 division units.
Accessories
| Accessory | Description | Article Number |
|---|---|---|
Quadruple Locking Device Image of a padlock symbol. | A locking/unlocking system that allows individual locking of the component using up to 4 padlocks. | 227232 |
Mounting Kit Image of mounting hardware. | A mounting kit for fixing the component to the mounting plate without a DIN rail. | 276618 |
Cylinder Lock Image of a cylinder lock. | For locking (shackle Ø 3) | 107115 |
Subject to change regarding technical specifications, dimensions, weight, construction types, and delivery possibilities. Figures are for indicative purposes only.
