R. STAHL 8530/1-MCB-STA102-C20-000-2 Line Protection Circuit Breaker
This document provides detailed technical information for the R. STAHL 8530/1-MCB-STA102-C20-000-2 line protection circuit breaker, part number 293972.
Product Overview
The R. STAHL 8530 series circuit breakers offer robust line protection with high switching capacity (10, 15, or 25 kA). They are designed for modularity, allowing for easy system expansion and replacement. These components are suitable for use in hazardous environments and feature a modular design available in 1 to 4 poles, 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 system expansion and replacement due to modular design
- Simple mounting by clipping onto a DIN rail in Ex e enclosures
- Fixed magneto-thermal releases
- Ergonomic control lever for safe switching on and off
- Padlock protection (accessories) prevents re-operation during maintenance
Technical Specifications
Explosion Protection
| Characteristic | Value |
|---|---|
| Application area (zones) | 1, 2 |
| Application area (zones) Note | Usable in Zone 21 / 22 with protection by Ex tb / tc enclosure |
| IECEx certificate gas | IECEx FMG 19.0029U |
| IECEx protection against gas explosion | Ex db eb IIC Gb |
| ATEX certificate gas | FM19ATEX0191U |
| ATEX protection against gas explosion | II 2 G Ex db eb IIC Gb |
| Certificates | ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM) |
| Certificate of conformity | Certificate of conformity (ATEX) |
Electrical Characteristics
| Characteristic | Value |
|---|---|
| Rated operational voltage AC | 230/400 V |
| Rated service current | 20 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 | 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 | 2 poles |
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 | Different ambient temperatures based on current certificates, on request |
Mechanical Characteristics
| Characteristic | Value |
|---|---|
| Degree of protection (IP) (IEC 60529) | IP2X |
| Housing material | Thermoplastic |
| Connection cross-section minimum | 1.5 mm² |
| Connection cross-section maximum | 25 mm² |
| Connection cross-section AWG min. | 16 AWG |
| Connection cross-section AWG max. | 4 AWG |
| Connection cross-section 2 min. | 1.5 mm² |
| Connection cross-section 2 max. | 10 mm² |
| Connection cross-section 2 AWG min. | 16 AWG |
| Connection cross-section 2 AWG max. | 8 AWG |
| Tightening torque min. | 2 N·m |
| Tightening torque max. | 3 N·m |
| Connection cross-section Note | For 2 conductors (upper and lower chamber simultaneously): Upper and lower chamber max. 16 / 10 mm² (Connection can be made with a maximum cross-section difference between the upper and lower chamber.) Permitted combination possibilities for connection cross-sections are indicated in the operating manual. |
Dimensions and Installation
| Characteristic | Value |
|---|---|
| Width | 65 mm (2.56 in) |
| Length | 165 mm (6.5 in) |
| Mounting depth | 138.3 mm (5.44 in) |
| Weight | 1 kg (2.205 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
Tripping Characteristic Curve C
A graph illustrating the tripping characteristic curve C for the circuit breaker, showing the relationship between multiples of the rated current (I/In) and tripping time in seconds for both AC and DC circuits. The curve indicates the limit from a cold state.
Layout Drawing
A dimensional drawing showing the overall size and mounting details of the circuit breaker. Dimensions are provided in mm [inches]. The drawing indicates the product is a 2-pole unit with no auxiliary contact.
Accessories
Quadruple Locking Device
A locking/unlocking system that allows individual locking of the component using up to 4 cylinder locks. Part number: 227232.
Fixing Kit
A fixing kit for mounting the component onto a mounting plate without a DIN rail. Part number: 276618.
Cylinder Lock
For locking (shackle Ø 3). Part number: 107115.
Subject to technical modifications, dimensions, weights, construction types, and delivery possibilities. Figures are for indicative purposes only.
Document version: V 0.97 FR. Date: 2025-06-27
Manufacturer: R. STAHL Schaltgeräte GmbH | Am Bahnhof 30 | 74638 WALDENBURG
Contact: Tel. +49 7942 943 1700 | +49 7942 943 1777 | Email: sales.de@r-stahl.com | r-stahl.com
