R. STAHL 8530/1-MCB-STA103-C16-500-4 Circuit Breaker

This document provides detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-C16-500-4 circuit breaker, also known by the article number 293900. This device is designed for line protection within system technology.

Key Features

Disconnecting function according to EN 60947-2
Energy limitation class 3
Easy replacement or expansion of systems due to modular design
Simple snap-on mounting onto a DIN rail in Ex e enclosures
Fixed magneto-thermal trip units
Ergonomic control lever for safe switching on and off
Padlock protection (accessories) prevents re-operation during maintenance

Technical Characteristics

Explosion Protection

Characteristic	Specification
Application area (zones)	1, 2
Application area (zones) Note	Usable in Zone 21 / 22 with protection by Ex tb / tc enclosure
IECEx certificate gas	IECEx FMG 19.0029U
IECEx protection against explosion of gas	Ex db eb IIC Gb
ATEX certificate gas	FM19ATEX0191U
ATEX protection against explosion of gas	II 2 G Ex db eb IIC Gb
Certificates	ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM)
Certificate of conformity	Certificate of conformity (ATEX)

Electrical Characteristics

Characteristic	Specification
Rated operational voltage AC	230/400 V
Rated service 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 changeover contact + signal contact 1 changeover contact
Voltage 1st auxiliary function AC	230 V
Max. current 1st auxiliary function	2 A
2nd auxiliary function	None
Max. voltage 2nd auxiliary function DC	-
Tripping characteristic	C
Number of poles	3-pole

Ambient Conditions

Characteristic	Specification
Ambient temperature	-40 °C ... 70 °C
Ambient temperature	-40 °C ... 70 °C
Ambient temperature	-40 °F ... 158 °F
Ambient temperature	-40°F ... +158°F
Ambient temperature Note	Different ambient temperatures based on current certificates, on request

Mechanical Characteristics

Characteristic	Specification
Degree of protection (IP) (IEC 60529)	IP2X
Housing material	Thermoplastic
Minimum connection terminal size	1.5 mm²
Maximum connection terminal size	25 mm²
Minimum connection terminal AWG size	16 AWG
Maximum connection terminal AWG size	4 AWG
Minimum connection terminal 2 size	1.5 mm²
Maximum connection terminal 2 size	10 mm²
Minimum connection terminal 2 AWG size	16 AWG
Maximum connection terminal 2 AWG size	8 AWG
Connection terminal for aux. contact min.	0.5 mm²
Connection terminal for aux. contact max.	4 mm²
Connection terminal for aux. contact min. AWG	18 (unece.unit.AWG)
Connection terminal for aux. contact max. AWG	14 (unece.unit.AWG)
Minimum tightening torque	2 N·m
Maximum tightening torque	3 N·m
Connection terminal Note	2-conductor connection (upper and lower chamber simultaneously): Upper and lower chamber max. 16 / 10 mm² (Connection can be made with a maximum section difference between the upper and lower chamber.)
Width	110 mm (4.33 in)
Length	165 mm (6.5 in)
Mounting depth	138.3 mm (5.44 in)
Weight	1.8 kg (3.969 lb)

Mounting / Installation

Characteristic	Specification
Tightening torque	2-3 N·m
Tightening torque in lbf in	17.7 ... 26.6 lbf-in
Tightening torque auxiliary contact	0.4 – 0.6 Nm
Tightening torque auxiliary contact lbf in	3.5 ... 5.3 lbf in

Technical Drawings

Technical drawings are provided, including dimensions and tripping characteristic curves. The tripping characteristic curve shows the tripping delay in seconds based on multiples of the rated current (I/In) for AC and DC.

3-pole with auxiliary contacts: Diagram shows a 3-pole configuration with one changeover auxiliary contact and one changeover signal contact.
Tripping characteristic curve: Graph illustrates tripping behavior based on current multiples, with curves for AC and DC.
Overall dimensions: Diagrams show the width, height, and depth of the unit, with dimensions in both millimeters and inches.

Accessories

Quadruple locking device (Art. No. 227232): A system for locking/unlocking, allowing individual component locking with up to 4 cylinder locks.
Fixing kit (Art. No. 276618): A kit for fixing the component onto a mounting plate without a DIN rail.
Cylinder lock (Art. No. 107115): For locking (stirrup Ø 3).

Note: Technical characteristics, dimensions, weight, construction types, and delivery possibilities are subject to change. Figures are for illustrative purposes only.

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