Components for system solutions
MCB Miniature circuit breaker
Model: 8530/1-MCB-STA101-B20-500-2
Art. No.: 293983
Product Features
- Isolation function in accordance with EN60947-2
- Energy limitation class 3
- Simple replacement or expansion of systems with modular design
- Easy installation: snaps onto mounting rail in Ex e enclosures
- Non-adjustable thermal and magnetic releases
- Ergonomically shaped operating lever for safe switching
- Padlocks (Accessories) prevent accidental switching during maintenance
Product Description
R. STAHL 8530 series miniature circuit breakers are overcurrent devices offering excellent current limiting for short circuits and high switching capacity (10, 15, or 25 kA). This design minimizes load on cables and enhances selectivity for upstream fuses. The components feature a modular design, available in 1- to 4-pole versions and for rated currents from 0.5-63 A. The maximum installation capacity is 4.5 subunits.
Technical Data
Explosion Protection
| Application range (zones) | 1, 2 |
| Application range (Zone) note | For use in Zone 2/22 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) |
Electrical Data
| Rated operational voltage AC | 230 V |
| Rated operational 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 | Auxiliary contact 1 change-over contact + fault signal contact 1 change-over contact |
| 1st auxiliary function for AC rated voltage | 230 V |
| 1st auxiliary function for rated current max. | 2 A |
| 2nd auxiliary function | without |
| 2nd auxiliary function voltage max. DC | - |
| Tripping characteristic | B |
| No. of poles | 1-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. aux. cont. con. cr.-sect. | 0.5 mm² |
| Max. aux. cont. conn. cr.-sec. | 4 mm² |
| Min. aux. co. con. cr.-se. AWG | 18 (unece.unit.AWG) |
| Connection cross-section of auxiliary contact AWG max. | 14 (unece.unit.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 | 65 mm |
| Width, inches | 2.56 in |
| Length | 165 mm |
| Length in inches | 6.5 in |
| Mounting depth | 138.3 mm |
| Mounting depth in inches | 5.44 in |
| Weight | 1 kg |
| Weight | 2.205 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 Curve B:
A graph shows the tripping time in seconds and minutes against multiples of the rated current. The curve is labeled 'Tripping characteristic B'. It indicates tripping times for AC and DC currents.
Dimensional Drawings:
Diagrams illustrating the dimensions of the circuit breaker in millimeters and inches. Key dimensions include width, length, and mounting depth.
1-pole, auxiliary contact:
A diagram showing a 1-pole configuration with an auxiliary contact (1 change-over contact) and a fault signal contact (1 change-over contact).
Accessories
4-way locking device
A lock-out/tag-out hasp for individually locking the component using up to four cylinder locks.
Art. No.: 227232
Cylinder lock
For closing (bracket Ø 3)
Art. No.: 107115
Fastening set
A fastening set for attaching the component to the mounting plate without a DIN rail.
Art. No.: 276618
General Notes
R. STAHL reserves the right to make alterations to technical data, dimensions, weights, designs, and products without prior notice. Illustrations are not binding.
