R. STAHL 8530/1-MCB-STA103-B25-000-3 Circuit Breaker
Article No. 272165
Product Description
The R. STAHL 8530 series circuit breakers offer excellent current limitation in case of short circuits and high breaking capacity (10, 15, or 25 kA). This results in reduced stress on electrical lines and high selectivity with respect to upstream fuses. The modules feature a modular design, are available in 1 to 4 pole configurations, and support nominal currents from 0.5–63 A. The maximum mounting capacity is 4.5 division units.
Key features include:
- Separator function according to EN 60947-2
- Energy limitation class 3
- Easy replacement or expansion of installations due to modular design
- Simple mounting via DIN mounting rail in Ex e enclosures
- Fixed thermal and magnetic trip adjustment
- Ergonomic operating lever for secure connection and disconnection
- Protection against re-closing during maintenance using padlocks (Accessories)
The product is certified for use in hazardous environments, including ATEX and IECEX gas certifications.
Technical Data
Explosion Protection
| Parameter | Value |
|---|---|
| Applications (zones) | 1, 2 |
| Applications (zones) Note | Can be used in zones 21/22 with protection by Ex tb/tc enclosure |
| IECEX gas certification | IECEX FMG 19.0029U |
| IECEx protection against gas explosions | Ex db eb IIC Gb |
| ATEX gas certification | FM19ATEX0191U |
| ATEX protection against gas explosions | II 2 G Ex db eb IIC Gb |
| Certifications | ATEX (FM), Brazil (ULB), China (CQST), IECEX (FM) |
| Certificate of conformity | Certificate of conformity (ATEX), China (CCC) |
Electrical Data
| Parameter | Value |
|---|---|
| Rated operating voltage AC | 230/400 V |
| Rated operating current | 25 A |
| Frequency | 50/60 Hz |
| Rated switching capacity | 10 kA |
| Electrical life | 2 x 10⁴ |
| Mechanical life | 2 x 10⁴ |
| 1st auxiliary function | none |
| 1st auxiliary function voltage AC | - |
| Max. current 1st auxiliary function | - |
| 2nd auxiliary function | none |
| Max. voltage 2nd auxiliary function DC | - |
| Trip characteristic | B |
| Number of poles | 3-pole |
Environmental Conditions
| Parameter | Value |
|---|---|
| Ambient temperature | -40 °C ... 70 °C |
| Ambient temperature | -40 °F ... 158 °F |
| Ambient temperature Note | Divergent ambient temperatures based on valid certificates upon request |
Mechanical Data
| Parameter | Value |
|---|---|
| Degree of protection (IP) (IEC 60529) | IP2X |
| Enclosure material | Thermoplastic |
| Connection terminal minimum cross-section | 1.5 mm² |
| Connection terminal maximum cross-section | 25 mm² |
| Connection terminal AWG min. | 16 AWG |
| Connection terminal AWG max. | 4 AWG |
| Connection 2 minimum cross-section | 1.5 mm² |
| Connection 2 maximum cross-section | 10 mm² |
| Connection 2 AWG min. | 16 AWG |
| Connection 2 AWG max. | 8 AWG |
| Tightening torque minimum | 2 N·m |
| Tightening torque maximum | 3 N·m |
| Connection terminal Note | 2 conductor connections (upper and lower chamber simultaneously): lower and upper chamber max. 16 / 10 mm² (only a difference in cross-section between the upper and lower chamber can be connected). Permitted connection cross-section combinations are listed in the user manual. |
| Width | 83 mm |
| Mounting width in inches | 3.27 in |
| Length | 165 mm |
| Length inches | 6.5 in |
| Installation depth | 138.3 mm |
| Installation depth inches | 5.44 in |
| Weight | 1.4 kg |
| Weight | 3.087 lb |
| Tightening torque | 2-3 N·m |
| Tightening torque Ibf·in | 17.7 ... 26.6 lbf·in |
| Tightening torque auxiliary contact | 0.4–0.6 N·m |
| Tightening torque auxiliary contact lbf·in | 3.5 ... 5.3 lbf·in |
Technical Diagrams
Trip Curve: The document includes a trip curve graph showing the relationship between time (seconds/minutes) and current (Amperes) for trip characteristic B, for both AC and DC. This curve illustrates the time it takes for the circuit breaker to trip under different fault current conditions, considering ambient temperature effects.
Dimensional Drawings: Several diagrams provide the dimensions of the circuit breaker. These include:
- Overall dimensions with width, height, and depth measurements in both millimeters and inches.
- Details of the mounting rail interface and enclosure dimensions.
- Diagram showing the 3-pole configuration.
Accessories
Cylinder Lock
Description: For locking (shackle Ø 3)
Article No.: 107115
Quadruple Immobilization Device
Description: Locking pliers / labeling device for individual component locking using up to 4 cylinder locks.
Article No.: 227232
Fixing Kit
Description: A fixing set for mounting the component on the mounting plate without a top-hat rail.
Article No.: 276618
R. STAHL Schaltgeräte GmbH reserves the right to modify technical data, dimensions, weights, constructions, and delivery options.
