Components for system solutions

MCB Miniature circuit breaker

Model: 8530/1-MCB-STA103-C6-000-3

Art. No.: 272175

Key Features

Isolation function in accordance with EN60947-2
Energy limitation class 3
Modular design for simple replacement or expansion
Easy installation on mounting rail in Ex e enclosures
Non-adjustable thermal and magnetic releases
Ergonomically shaped operating lever for safe switching
Padlocks (Accessories) provide protection against being switched on again during maintenance work

Product Overview

R. STAHL 8530 series miniature circuit breakers are overcurrent devices offering excellent current limiting for short circuits and a high switching capacity of 10, 15, or 25 kA. This design minimizes load on cables and ensures high selectivity for upstream fuses. The components feature a modular design, available in 1- to 4-pole versions and 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), China (CCC)

Electrical Data

Rated operational voltage AC	230/400 V
Rated operational current	6 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	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	C
No. of poles	3-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. 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.

Dimensions

Width	83 mm
Width, inches	3.27 in
Length	165 mm
Length in inches	6.5 in
Mounting depth	138.3 mm
Mounting depth in inches	5.44 in
Weight	1.4 kg
Weight	3.087 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 C: The document includes a graph illustrating the tripping characteristic 'C' for AC and DC, showing the relationship between multiples of rated current and tripping time in seconds and minutes. This is crucial for understanding the breaker's response to overcurrents.

Dimensional Drawings: Detailed diagrams show the physical dimensions of the circuit breaker in millimeters and inches. These include overall width, length, and mounting depth, along with specific details for 3-pole configurations and connection points.

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 fastening the component on the mounting plate without a DIN rail.

Art. No.: 276618

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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