Components for system solutions
MCB Miniature circuit breaker
Model: 8530/1-MCB-STA103-B40-000-3
Art. No.: 272167
Product Overview
The R. STAHL 8530 series miniature circuit breakers are overcurrent devices designed for effective current limiting for short circuits and high switching capacity (10, 15, or 25 kA). These components feature a modular design, are available in 1- to 4-pole versions, and support rated currents from 0.5 A to 63 A. The maximum installation capacity is 4.5 subunits.
Key features include:
- Isolation function in accordance with EN60947-2
- Energy limitation class 3
- Modular design for simple replacement or expansion
- Snap-on mounting for Ex e enclosures
- Non-adjustable thermal and magnetic releases
- Ergonomically shaped operating lever for safe switching
- Padlocks (Accessories) for protection against accidental switching during maintenance
Technical Data
Explosion Protection
| Application range (zones) | 1, 2 |
| Application range (Zone) note | For use in Zone 21/22 when protected 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 2 G Ex db eb IIC Gb |
| Certificates | ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM) |
| Declaration of conformity | Certificate of conformity (ATEX), China (CCC) |
Electrical Data
| Rated operational voltage AC | 230/400 V |
| Rated operational current | 40 A |
| Frequency | 50/60 Hz |
| Rated switching capacity | 10 kA |
| Electrical service life | 104 |
| Mechanical service life | 2 x 104 |
| 1st auxiliary function | without |
| 1st auxiliary function for AC rated voltage | - |
| 1st auxiliary function for rated current max. | - |
| 2nd auxiliary function | without |
| 2nd auxiliary function voltage max. DC | - |
| Tripping characteristic | B |
| No. of poles | 3-pole |
Ambient Conditions
| Ambient temperature | -40 °C ... 70 °C |
| Ambient temperature | -40 °F ... 158 °F |
| Ambient temperature note | Deviating ambient temperatures based on current certificates available on request |
Mechanical Data
| Degree of protection (IP) (IEC 60529) | IP2X |
| Enclosure material | Thermoplast |
| Connection cross section min. | 1.5 mm² |
| Connection cross-section max. | 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 |
| Min. tightening torque | 2 N·m |
| Max. tightening torque | 3 N·m |
| Connection cross-section note | 2-conductor connection (upper and lower chamber at the same time): upper and lower chamber max. 16/10 mm² (A maximum difference of one cross section may be clamped between the upper and lower chamber.) The permitted combinations of connection cross-sections can be found in the operating instructions. |
| Width | 83 mm |
| Width, inches | 3.27 in |
| Length | 165 mm |
| Length in inches | 6.5 in |
| Mounting depth | 138.3 mm |
| Mounting depth in inches | 5.44 in |
| Weight | 1.4 kg |
| Weight | 3.087 lb |
Mounting / Installation
| Tightening torque | 2–3 N·m |
| Tightening torque lbf in | 17.7 to 26.6 lbf-in |
| Tightening torque auxiliary contact | 0.4–0.6 N·m |
| Tightening torque auxiliary contact lbf in | 3.5 to 5.3 lbf in |
Technical Drawings
Tripping Characteristic B: The diagram shows tripping curves for AC and DC based on multiples of the rated current.
Dimensional Drawings: All dimensions are provided in mm [inches]. The drawings illustrate the overall dimensions and mounting details of the circuit breaker.
Accessories
| Accessory | Description | Art. No. |
| 4-way locking device | A lock-out/tag-out hasp for individually locking the component using up to four cylinder locks. | 227232 |
| Cylinder lock | for closing (bracket Ø 3) | 107115 |
| Fastening set | A fastening set for fastening the component on the mounting plate without a DIN rail | 276618 |
Note: R. STAHL reserves the right to make alterations to the technical data, dimensions, weights, designs and products available without notice. The illustrations cannot be considered binding.
Related Documents
 |
R. STAHL 8530/1-MCB-STA103-B40-000-3 Miniature Circuit Breaker - Technical Specifications Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-B40-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories. Suitable for use in hazardous areas. |
 |
R. STAHL 8530/1-MCB-STA103-C32-000-3 Miniature Circuit Breaker - Technical Data and Specifications Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-C32-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories. Suitable for system solutions requiring reliable overcurrent protection. |
 |
R. STAHL 8530/1-MCB-STA103-B40-000-3 Line Protection Circuit Breaker - Technical Specifications Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-B40-000-3 line protection circuit breaker, including features, electrical characteristics, mechanical specifications, and explosion protection data. |
 |
R. STAHL 8530/1-MCB-STA103-B40-000-3 Circuit Breaker - Technical Specifications Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-B40-000-3 circuit breaker, including electrical data, mechanical data, environmental conditions, and accessories. Suitable for use in hazardous areas. |
 |
R. STAHL MCB Miniature Circuit Breaker 8530/1-MCB-STA103-C10-000-3: Technical Specifications and Features Detailed technical specifications, features, and accessories for the R. STAHL 8530/1-MCB-STA103-C10-000-3 miniature circuit breaker, including explosion protection, electrical data, ambient conditions, and mechanical data. |
 |
R. STAHL 8530/1-MCB-STA103-C50-500-4 Miniature Circuit Breaker Technical Data Detailed technical specifications and features of the R. STAHL 8530/1-MCB-STA103-C50-500-4 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories. |
 |
R. STAHL 8530/1-MCB-STA103-B6-000-3 Miniature Circuit Breaker - Technical Specifications Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-B6-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories. Suitable for system solutions and hazardous environments. |
 |
R. STAHL 8530/1-MCB-STA103-B25-000-3 Miniature Circuit Breaker - Technical Data Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-B25-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories. Suitable for system solutions. |