Components for System Solutions: MCB Miniature Circuit Breaker
Model: 8530/1-MCB-STA101-B16-500-2
Art. No.: 293980
Key Features
- Isolation function in accordance with EN60947-2
- Energy limitation class 3
- Modular design for simple replacement or expansion
- Easy installation in Ex e enclosures
- Non-adjustable thermal and magnetic releases
- Ergonomically shaped operating lever for safe operation
- Padlocks (Accessories) for protection during maintenance
The R. STAHL 8530 series miniature circuit breakers are overcurrent devices with good current limiting for short circuits and a high switching capacity (10, 15, or 25 kA). They offer low load on cables and high selectivity for upstream fuses. These components have a modular design and are available in 1- to 4-pole versions for rated currents of 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 V |
| Rated operational current | 16 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
Subject to Alterations
Tripping Characteristic B:
A diagram shows tripping curves for AC and DC currents based on multiples of the rated current. The curves indicate tripping times from cold state for different current multiples.
Dimensional Drawings:
Diagrams illustrate the dimensions of the circuit breaker in millimeters and inches. Key dimensions include width, length, and mounting depth.
1-pole, auxiliary contact:
A diagram shows the configuration of a 1-pole unit with auxiliary contacts.
Accessories
4-way locking device
A lock-out/tag-out hasp for individually locking the component using up to four cylinder locks.
| Description | Art. No. |
| A lock-out/tag-out hasp for individually locking the component using up to four cylinder locks. | 227232 |
Cylinder lock
| Description | Art. No. |
| for closing (bracket Ø 3) | 107115 |
Fastening set
| Description | Art. No. |
| A fastening set for fastening the component on the mounting plate without a DIN rail | 276618 |
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.
