R. STAHL 8530/1-MCB-STA102-B25-500-3 Circuit Breaker

Article Number: 272128

Product Description

The R. STAHL 8530/1-MCB-STA102-B25-500-3 circuit breaker is a component for systems designed for explosion protection. It features a high current limitation in case of short circuits and a high breaking capacity of 10, 15, or 25 kA, resulting in reduced load on electrical lines and high selectivity with upstream fuses. The modular design allows for easy installation and expansion, with models available in 1 to 4 poles and nominal currents from 0.5–63 A. The maximum mounting capacity is 4.5 division units.

Key Features:

Disconnector function according to EN 60947-2
Energy limitation class 3
Easy replacement or expansion of installations due to modular design
Simple mounting via DIN mounting rail in Ex e enclosures
Fixed thermal and magnetic tripping adjustment
Ergonomic operating lever for safe connection and disconnection
Protection against re-closing during maintenance using padlocks (Accessories)

Technical Data

Explosion Protection

Applications (zones)	1, 2
Applications (zones) Note	Can be used in zones 21/22 with Ex tb/tc enclosure protection
IECEx gas homologation	IECEX FMG 19.0029U
IECEx Gas Explosion Protection	Ex db eb IIC Gb
ATEX gas homologation	FM19ATEX0191U
ATEX Gas Explosion Protection	II 2 G Ex db eb IIC Gb
Certifications	ATEX (FM), Brazil (ULB), China (CQST), IECEX (FM)
Certificate of conformity	Certificate of conformity (ATEX), China (CCC)

Electrical Data

Rated operating voltage AC	230/400 V
Rated operating current	25 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 changeover + Error signal contact 1 changeover
Voltage 1st auxiliary function AC	230 V
Max. current 1st auxiliary function	2 A
2nd auxiliary function	None
Max. voltage 2nd aux. function DC	8
Tripping characteristic	B
Number of poles	2-pole

Environmental Conditions

Ambient temperature	-40 °C ... 70 °C
Ambient temperature (°F)	-40 °F ... 158 °F
Ambient temperature Note	Divergent ambient temperatures based on valid certificates upon request

Mechanical Data

Degree of protection (IP) (IEC 60529)	IP2X
Enclosure material	Thermoplastic
Minimum connection cross-section	1.5 mm²
Maximum connection cross-section	25 mm²
Minimum AWG connection cross-section	16 AWG
Maximum AWG connection cross-section	4 AWG
Minimum connection cross-section 2	1.5 mm²
Maximum connection cross-section 2	10 mm²
Minimum AWG connection cross-section 2	16 AWG
Maximum AWG connection cross-section 2	8 AWG
Minimum HIKO connection cross-section	0.5 mm²
Maximum HIKO connection cross-section	4 mm²
Minimum HIKO connection cross-section AWG	18 (unece.unit.AWG)
Maximum HIKO connection cross-section AWG	14 (unece.unit.AWG)
Minimum torque	2 N·m
Maximum torque	3 N·m
Connection cross-section Note	2 conductor connections (upper and lower chamber simultaneously): upper and lower chamber max. 16 / 10 mm² (only one cross-sectional difference can be accommodated in the upper and lower chamber.) Permitted connection cross-section combinations are listed in the operating instructions.

Dimensions

Width	83 mm
Width mounting inches	3.27 in
Length	165 mm
Length inches	6.5 in
Installation depth	138.3 mm
Installation depth inches	5.44 in
Weight	1.3 kg
Weight lbs	2.867 lb

Mounting / Installation

Torque	2-3 N·m
Torque lbf·in	17.7 ... 26.6 lbf·in
Torque auxiliary contact	0.4 - 0.6 N·m
Torque auxiliary contact lbf·in	3.5 ... 5.3 lbf·in

Accessories

Cylinder Lock

For locking (stirrup Ø 3)

Article No.: 107115

Quadruple Immobilization Device

Locking/tagging pliers for individual component locking using up to 4 cylinder locks.

Article No.: 227232

Fixing Kit

A fixing kit for mounting the component on the mounting plate without a top hat rail.

Article No.: 276618

Technical Drawings and Diagrams

Tripping Characteristic Curve B: A graph illustrating the tripping characteristic for AC and DC, showing time versus current. The curve indicates the time it takes for the breaker to trip under various fault current conditions.

Measurement Diagram: Schematics showing the dimensions of the circuit breaker, including width, height, depth, and mounting dimensions. Measurements are provided in both millimeters and inches.

Exploded View Diagram: An illustration showing the different parts of the circuit breaker for assembly or maintenance reference.

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