R. STAHL 8530/1-MCB-STA103N-B6-000-4 Line Protection Circuit Breaker

Article Number: 293843

Product Overview

The R. STAHL 8530 series line protection circuit breakers offer excellent current limitation for short circuits and high switching capacities of 10, 15, or 25 kA. They are designed for minimal line load and high selectivity to upstream fuses. These modular components are available in 1 to 4-pole versions with nominal currents from 0.5–63 A, supporting a maximum installation capacity of 4.5 modular units (MU).

Key features include:

Disconnection function according to EN 60947-2
Energy limitation class 3
Easy replacement and system extension due to modular design
Simple snap-on mounting on DIN rails in Ex e enclosures
Fixed magneto-thermal trip units
Ergonomic operating lever for safe switching on and off
Padlock protection (accessories) prevents re-operation during maintenance

Technical Characteristics

Explosion Protection

Application Area (Zones)	Application Area (Zones) Note	Certificates	Explosion Protection Certificate
1, 2	Usable in Zone 21 / 22 with Ex tb / tc enclosure protection	IECEx FMG 19.0029U	Ex db eb IIC Gb
		FM19ATEX0191U	II 2G Ex db eb IIC Gb
		ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM)	ATEX (FM)

Electrical Characteristics

Characteristic	Value
Rated operational voltage AC	230/400 V
Rated service 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	None
Voltage 1st auxiliary function AC	-
Current max. 1st auxiliary function	-
2nd auxiliary function	None
Max. voltage 2nd auxiliary function DC	-
Tripping characteristic	B
Number of poles	3 poles + N

Ambient Conditions

Condition	Value
Ambient temperature	-40 °C ... 70 °C (-40 °F ... 158 °F)
Ambient temperature Note	Ambient temperatures differing based on current certificates, on request

Mechanical Characteristics

Characteristic	Value
Degree of protection (IP) (IEC 60529)	IP2X
Housing material	Thermoplastic
Minimum connection terminal size	1.5 mm²
Maximum connection terminal size	25 mm²
Minimum AWG connection terminal size	16 AWG
Maximum AWG connection terminal size	4 AWG
Minimum connection terminal size 2	1.5 mm²
Maximum connection terminal size 2	10 mm²
AWG connection terminal size 2 min.	16 AWG
AWG connection terminal size 2 max.	8 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.) Permitted combination possibilities of connection terminals are indicated in the operating instructions.
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	Value
Tightening torque	2–3 N·m (17.7 ... 26.6 lbf-in)
Tightening torque auxiliary contact	0.4–0.6 Nm (3.5 ... 5.3 lbf-in)

Technical Drawings

Overall dimensions (all dimensions in mm [inches])

Circuit breaker dimensions:

Width: 110 [4.33]
Length: 165 [6.50]
Height: 91.50 [3.60]
Mounting depth: 138.30 [5.44]
Total width including adjacent modules: 127.60 [5.02]
Width of 4 modules: 8530/1; 4 division units

Tripping Characteristic Curve B:

A graph shows the tripping characteristic for Type B circuit breakers. The x-axis represents multiples of the rated current (I/In), ranging from 0.1 to 30. The y-axis represents time in seconds and minutes, ranging from 0.01 to 120. The curve illustrates the time it takes for the breaker to trip based on the current level, with a note indicating it's a limit curve from a cold state.

Accessories

Quadruple Locking Device

A locking/unlocking system that allows individual locking of the component using up to 4 cylinder locks.

Article Number: 227232

Fixing Kit

A fixing kit for attaching the component to a mounting plate without a DIN rail.

Article Number: 276618

Cylinder Lock

For locking (shackle Ø 3)

Article Number: 107115

Note: Technical specifications, dimensions, weights, construction types, and delivery possibilities are subject to change without notice. Figures are for illustrative purposes only.

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