R. STAHL Miniature Circuit Breaker - Line Protection
Model: 8530/1-MCB-STA103-C63-500-4
Article Number: 293906
Product Overview
The R. STAHL 8530 series miniature circuit breakers (MCBs) are designed for line protection, offering good current limitation in short-circuit situations and high switching capacity of 10, 15, or 25 kA. These components are modular, available in 1 to 4 pole versions, and rated for currents from 0.5–63 A. They are suitable for installation in DIN rail mounting systems and feature ergonomic levers for safe operation. Padlock protection is available to prevent re-operation during maintenance.
Key Features
- Disconnecting function according to EN 60947-2
- Energy limitation class 3
- Easy replacement and system extension due to modular design
- Simple snap-on mounting on DIN rails in Ex e enclosures
- Fixed thermal-magnetic releases
- Ergonomic operating lever for safe switching
- Padlock protection accessory available
Technical Characteristics
Explosion Protection
| Application Domain (Zones) | 1, 2 |
|---|---|
| Application Domain (Zones) Note | Usable in Zone 21 / 22 with protection by Ex tb / tc enclosure |
| 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 2G Ex db eb IIC Gb |
| Certificates | ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM) |
| Conformity Certificate | ATEX Conformity Certificate |
Electrical Characteristics
| Rated Operational Voltage AC | 230/400 V |
|---|---|
| Rated Service Current | 63 A |
| Frequency | 50/60 Hz |
| Rated Breaking Capacity | 10 kA |
| Electrical Service Life | 104 |
| Mechanical Service Life | 2 x 105 |
| 1st Auxiliary Function | Auxiliary contact: 1 changeover contact + 1 error signal contact (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 | - |
| Tripping Characteristic | C |
| Number of Poles | 3 poles |
Environmental Conditions
| Ambient Temperature | -40 °C ... 70 °C |
|---|---|
| Ambient Temperature (Fahrenheit) | -40 °F ... 158 °F |
| Ambient Temperature Note | Different ambient temperatures based on current certificates, upon request. |
Mechanical Characteristics
| Degree of Protection (IP) (IEC 60529) | IP2X |
|---|---|
| Housing Material | Thermoplastic |
| Connection Terminal Size Min. | 1.5 mm² |
| Connection Terminal Size Max. | 25 mm² |
| Connection Terminal AWG Min. | 16 AWG |
| Connection Terminal AWG Max. | 4 AWG |
| Connection Terminal 2 Size Min. | 1.5 mm² |
| Connection Terminal 2 Size Max. | 10 mm² |
| Connection Terminal 2 AWG Min. | 16 AWG |
| Connection Terminal 2 AWG Max. | 8 AWG |
| Connection Terminal Auxiliary Min. | 0.5 mm² |
| Connection Terminal Auxiliary Max. | 4 mm² |
| Connection Terminal Auxiliary AWG Min. | 18 (AWG) |
| Connection Terminal Auxiliary AWG Max. | 14 (AWG) |
| Tightening Torque Min. | 2 N·m |
| Tightening Torque Max. | 3 N·m |
| Connection Terminal Note | For 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 connection terminal combinations are specified in the user manual. |
Dimensions
| 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 N·m (3.5 ... 5.3 lbf·in) |
Technical Drawings
Diagrams illustrating tripping characteristics and overall dimensions are provided. The tripping characteristic curve shows the relationship between multiples of the rated current (I/In) and tripping time in seconds for AC and DC, with a 'C' characteristic.
Figure shows tripping characteristic curve for 'C' type, indicating time in seconds vs. multiple of rated current.
Dimensional drawings show the overall size and mounting details of the circuit breaker, including width, height, and depth, with dimensions provided in both millimeters and inches.
Figure shows overall dimensions of the 8530/1 unit, specified as 4 division units.
Accessories
Quadruple Locking Device
A locking/unlocking system that allows individual locking of the component using up to 4 cylinder locks.
| Description | Article Number |
|---|---|
| Quadruple locking device for individual component locking with up to 4 cylinder locks | 227232 |
Fixing Kit
A fixing kit for mounting the component onto a mounting plate without a DIN rail.
| Description | Article Number |
|---|---|
| Fixing kit for attaching the component to the mounting plate without a DIN rail | 276618 |
Cylinder Lock
For locking (stirrup Ø 3).
| Description | Article Number |
|---|---|
| For locking (stirrup Ø 3) | 107115 |
Note: Technical specifications, dimensions, weight, construction types, and delivery possibilities are subject to change without notice. Figures are for illustrative purposes only.
