R. STAHL 8530/1-MCB-STA103-C50-000-3 Miniature Circuit Breaker for Line Protection
Article Number: 272183
Product Overview
The R. STAHL 8530 series line protection circuit breakers offer robust current limitation for short circuits and high switching capacities of 10, 15, or 25 kA. These components are designed for modularity, available in 1 to 4 poles, with nominal currents from 0.5–63 A. They are suitable for installation in Ex e enclosures and provide excellent selectivity with upstream fuses.
Key features include:
- Conformity to EN 60947-2 for disconnection
- Energy limitation class 3
- Easy system expansion and modular design
- Simple snap-on mounting onto a DIN rail in Ex e enclosures
- Fixed magneto-thermal releases
- Ergonomic lever for safe operation
- Padlock protection to prevent re-operation during maintenance
Technical Specifications
Explosion Protection
| Characteristic | Specification |
|---|---|
| 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 Gas Explosion Protection | Ex db eb IIC Gb |
| ATEX Certificate Gas | FM19ATEX0191U |
| ATEX Gas Explosion Protection | Ex db eb IIC Gb |
| Certificates | ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM) |
| Conformity Certificate | Conformity Certificate (ATEX), China (CCC) |
Electrical Characteristics
| Characteristic | Specification |
|---|---|
| Rated Operational Voltage AC | 230/400 V |
| Rated Operational Current | 50 A |
| Frequency | 50/60 Hz |
| Rated Service Breaking Capacity | 10 kA |
| Electrical Service Life | 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 |
Mechanical Characteristics
| Characteristic | Specification |
|---|---|
| Degree of Protection (IP) (IEC 60529) | IP2X |
| Housing Material | Thermoplastic |
| Connection Terminal Minimum Conductor Size | 1.5 mm² |
| Connection Terminal Maximum Conductor Size | 25 mm² |
| Connection Terminal Minimum AWG Size | 16 AWG |
| Connection Terminal Maximum AWG Size | 4 AWG |
| Connection Terminal 2 Minimum Conductor Size | 1.5 mm² |
| Connection Terminal 2 Maximum Conductor Size | 10 mm² |
| Connection Terminal 2 Minimum AWG Size | 16 AWG |
| Connection Terminal 2 Maximum AWG Size | 8 AWG |
| Tightening Torque Minimum | 2 N·m |
| Tightening Torque Maximum | 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 conductor size combinations 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 | Specification |
|---|---|
| Tightening Torque | 2–3 N·m [17.7 ... 26.6 lbf·in] |
| Tightening Torque Auxiliary Contact | 0.4–0.6 N·m [3.5 ... 5.3 lbf·in] |
Technical Drawings and Dimensions
Technical Drawings (subject to change)
Diagram showing connection terminals and internal components.
Diagram showing tripping characteristic curve for AC and DC.
Overall Dimensions (all dimensions in mm [inches]) (subject to change)
Diagram illustrating the physical dimensions of the circuit breaker, showing width, height, and depth, including mounting points. The unit is described as 8530/1; 3 division units.
Accessories
Quadruple Locking Device
A locking/unlocking system that allows individual locking of the component using up to 4 padlocks.
| Description | Article Number |
|---|---|
| Quadruple locking/unlocking system for individual component locking using up to 4 padlocks. | 227232 |
Fixing Kit
| Description | Article Number |
|---|---|
| A fixing kit for mounting the component onto a mounting plate without a DIN rail. | 276618 |
Cylinder Lock
| Description | Article Number |
|---|---|
| For locking (stirrup Ø 3) | 107115 |
Note: Technical characteristics, dimensions, weights, construction types, and delivery options are subject to change. Figures are for illustrative purposes only.
