R. STAHL Circuit Breaker 8530/1-MCB-STA103-C50-000-3

Article Number: 272183

Product Description

The R. STAHL 8530 series circuit breakers offer excellent current limitation in case of short circuits and high breaking capacity (10, 15, or 25 kA). This results in reduced stress on electrical lines and improved selectivity with respect to upstream fuses. The modules feature a modular design, available in 1 to 4 pole configurations, with nominal currents from 0.5–63 A. The maximum mounting width is 4.5 division units.

Key Features:

Separator function according to EN 60947-2
Energy limitation class 3
Simple replacement or expansion of installations due to modular design
Easy mounting via DIN rail snap-on in Ex e enclosures
Thermally and magnetically tripped, with fixed settings
Ergonomic operating lever for secure connection and disconnection
Protection against re-closing during maintenance using padlocks (Accessories)

Technical Data

Explosion Protection

Parameter	Value
Applications (zones)	1, 2
Applications (zones) Note	Can be used in zones 21/22 with protection by Ex tb/tc enclosure
IECEX gas approval	IECEX FMG 19.0029U
IECEx protection against gas explosion	Ex db eb IIC Gb
ATEX gas approval	FM19ATEX0191U
ATEX protection against gas explosion	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

Parameter	Value
Rated operating voltage AC	230/400 V
Rated operating current	50 A
Frequency	50/60 Hz
Rated switching capacity	10 kA
Electrical service life	10⁴
Mechanical service life	2 x 10⁴
1st auxiliary function	none
1st auxiliary function voltage AC	-
Max. current 1st auxiliary function	-
2nd auxiliary function	none
Max. voltage 2nd auxiliary function DC	-
Tripping characteristic	C
Number of poles	3-pole

Mechanical Data

Parameter	Value
Ambient temperature	-40 °C ... 70 °C
Storage temperature	-40 °C ... 70 °C
Ambient temperature (Fahrenheit)	-40 °F ... 158 °F
Storage temperature (Fahrenheit)	-40°F ... +158°F
Ambient temperature Note	Divergent ambient temperatures based on valid certificates upon request
Degree of protection (IP) (IEC 60529)	IP2X
Enclosure material	Thermoplastic
Connection terminal minimum cross-section	1.5 mm²
Connection terminal maximum cross-section	25 mm²
Connection terminal AWG min.	16 AWG
Connection terminal AWG max.	4 AWG
Connection terminal 2 minimum cross-section	1.5 mm²
Connection terminal 2 maximum cross-section	10 mm²
Connection terminal 2 AWG min.	16 AWG
Connection terminal 2 AWG max.	8 AWG
Tightening torque minimum	2 N·m
Tightening torque maximum	3 N·m
Connection terminal Note	2 conductor connections (upper and lower chamber simultaneously): lower and upper chamber max. 16 / 10 mm² (only one cross-section difference can be connected between the upper and lower chamber.) Permitted connection cross-section combinations are listed in the user manual.
Width	83 mm
Width mounting in inches	3.27 in
Length	165 mm
Length in inches	6.5 in
Installation depth	138.3 mm
Installation depth in inches	5.44 in
Weight	1.4 kg
Weight (lb)	3.087 lb
Mounting / Installation
Tightening torque	2-3 N·m
Tightening torque lbf in	17.7 ... 26.6 lbf-in
Auxiliary contact tightening torque	0.4–0.6 N·m
Auxiliary contact tightening torque lbf in	3.5 ... 5.3 lbf in

Technical Diagrams

Tripping Characteristic Curve: The document includes a graph illustrating the tripping characteristic curve 'C' for the circuit breaker, showing the relationship between multiples of the rated current (I/In) and tripping time in seconds for both AC and DC applications.

Dimensional Drawings: Detailed drawings show the dimensions of the circuit breaker, including width, height, depth, and mounting details, with measurements provided in both millimeters and inches.

Accessories

Accessory	Description	Article Number
Cylinder lock	For locking (shackle Ø 3)	107115
Quadruple locking device	Locking/tagging pliers for individual component locking using up to 4 cylinder locks.	227232
Fixing kit	A fixing kit for mounting the component on the mounting plate without a top hat rail.	276618

R. STAHL reserves the right to modify technical data, dimensions, weights, constructions, and delivery options.

Contact Information:

R. STAHL Schaltgeräte GmbH | Am Bahnhof 30 | 74638 WALDENBURG

Tel. +49 7942 943 1700 | +49 7942 943 1777 | Email: sales.de@r-stahl.com | r-stahl.com

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