R. STAHL 8530/1-MCB-STA103-C25-500-4 Line Protection Circuit Breaker
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 stress 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).
Key Features
- Disconnecting function according to EN 60947-2
- Energy limitation class 3
- Easy replacement or system extension due to modular design
- Simple plug-in mounting on a DIN rail in Ex e enclosures
- Fixed thermal-magnetic releases
- Ergonomic lever for safe activation and deactivation
- Padlock protection (accessories) prevents re-operation during maintenance
Technical Characteristics
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) |
Electrical Characteristics
| Rated Operational Voltage AC | 230/400 V |
|---|---|
| Rated Service Current | 25 A |
| Frequency | 50/60 Hz |
| Rated Switching Capacity | 10 kA |
| Electrical Service Life | 2 x 104 |
| Mechanical Service Life | 2 x 104 |
| 1st Auxiliary Function | Auxiliary contact 1 changeover + signal contact 1 changeover |
| Voltage 1st Auxiliary Function AC | 230 V |
| Max. Current 1st Auxiliary Function | 2 A |
| 2nd Auxiliary Function | None |
| Max. Voltage 2nd Auxiliary Function DC | C |
| Trip Characteristic | C |
| Number of Poles | 3 poles |
Ambient Conditions
| Ambient Temperature | -40 °C ... 70 °C |
|---|---|
| Ambient Temperature | -40 °C ... 70 °C |
| Ambient Temperature | -40 °F ... 158 °F |
| Ambient Temperature Note | Ambient temperatures different 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 |
| Minimum Connection Terminal Size 2 | 1.5 mm² |
| Maximum Connection Terminal Size 2 | 10 mm² |
| Minimum AWG Connection Terminal Size 2 | 16 AWG |
| Maximum AWG Connection Terminal Size 2 | 8 AWG |
| Min. Connection Terminal Auxiliary | 0.5 mm² |
| Max. Connection Terminal Auxiliary | 4 mm² |
| Min. AWG Connection Terminal Auxiliary | 18 (unece.unit.AWG) |
| Max. AWG Connection Terminal Auxiliary | 14 (unece.unit.AWG) |
| Minimum Tightening Torque | 2 N·m |
| Maximum Tightening Torque | 3 N·m |
| Connection Terminal Note | 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.) |
| Width | 110 mm (4.33 in) |
| Length | 165 mm (6.5 in) |
| Mounting Depth | 138.3 mm (5.44 in) |
| Weight | 1.8 kg (3.969 lb) |
Mounting / Installation
| Tightening Torque | 2-3 N·m (17.7 ... 26.6 lbf-in) |
|---|---|
| Tightening Torque Auxiliary Contact | 0.4–0.6 Nm (3.5 ... 5.3 lbf-in) |
Technical Drawings
Diagrams showing dimensions and tripping characteristics are available. The tripping characteristic curve C is provided for AC and DC.
Dimensions:
- Width: 110 mm [4.33 in]
- Length: 165 mm [6.50 in]
- Mounting Depth: 138.30 mm [5.44 in]
Tripping Characteristic Curve C:
A graph illustrates the tripping delay in seconds versus the multiple of the rated current (I/In) for AC and DC, showing the limit from a cold state.
Accessories
Quadruple Locking Device
A locking/unlocking system that allows individual component locking using up to 4 cylinder locks.
| Description | Part No. |
|---|---|
| Quadruple locking device | 227232 |
Fixing Kit
A fixing kit for attaching the component to a mounting plate without a DIN rail.
| Description | Part No. |
|---|---|
| Fixing kit for mounting without DIN rail | 276618 |
Cylinder Lock
For locking (shackle Ø 3).
| Description | Part No. |
|---|---|
| Cylinder lock | 107115 |
Technical specifications, dimensions, weights, construction types, and delivery options are subject to change without notice. Figures are for illustrative purposes only.
Contact Information:
R. STAHL Schaltgeräte GmbH | Am Bahnhof 30 | 74638 WALDENBURG
Tel. +49 7942 943 1700 | +49 7942 943 1777 | Email: sales.de@r-stahl.com | r-stahl.com
