Components for system solutions
MCB Miniature circuit breaker
Model: 8530/1-MCB-STA103N-B63-000-4
Art. No.: 293852
Key Features
- Isolation function in accordance with EN60947-2
- Energy limitation class 3
- Simple replacement or expansion of systems due to modular design
- Easy installation: snaps onto the mounting rail in Ex e enclosures
- Non-adjustable thermal and magnetic releases
- Ergonomically shaped operating lever for safe switching
- Padlocks (Accessories) available for protection against accidental switching during maintenance
Product Overview
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 reduces stress on cables and improves selectivity with upstream fuses. The components feature a modular design and are available in 1- to 4-pole versions with 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 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) |
Electrical Data
| Rated operational voltage AC | 230/400 V |
| Rated operational current | 63 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 + N |
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):
|
| Width | 110 mm |
| Width, inches | 4.33 in |
| Length | 165 mm |
| Length in inches | 6.5 in |
| Mounting depth | 138.3 mm |
| Mounting depth in inches | 5.44 in |
| Weight | 1.8 kg |
| Weight | 3.969 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
A graph shows the tripping time in minutes and seconds against the multiple of rated current for a tripping curve from a cold state. The curve is labeled 'B'.
Dimensional Drawings (All Dimensions in mm [inches])
Diagrams showing the overall dimensions of the miniature circuit breaker, including width, length, and mounting depth. The diagrams indicate various connection points and configurations.
Accessories
4-way locking device
Art. No.: 227232
A lock-out/tag-out hasp for individually locking the component using up to four cylinder locks.
Cylinder lock
Art. No.: 107115
For closing (bracket Ø 3)
Fastening set
Art. No.: 276618
A fastening set for fastening the component on the mounting plate without a DIN rail.
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.
