R. STAHL 8530/1-MCB-STA103N-C20-000-4 Line Protection Circuit Breaker

Article Number: 293857

System Components for System Technology

Product: Disjoncteur Disjonct. protection de ligne (Line Protection Circuit Breaker)

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. This ensures minimal stress on lines and high selectivity to upstream fuses. The components are modularly designed and available in 1 to 4-pole versions for nominal currents from 0.5–63 A. The maximum installation capacity is 4.5 partial units (UP).

Key Features:

Disconnecting function according to EN 60947-2
Energy limitation class 3
Easy replacement or system extension due to modular circuit breaker design
Simple plug-in mounting on a DIN rail in Ex e enclosures
Fixed magnetic-thermal trip units
Ergonomic lever for safe activation and deactivation
Padlock protection (accessories) prevents re-operation during maintenance

Technical Characteristics

Explosion Protection

Area of Application (Zones)	1, 2
Area of Application (Zones) Note	Usable in Zone 21 / 22 with Ex tb / tc enclosure protection
IECEx Certificate Gas	IECEx FMG 19.0029U
IECEx Protection Against Gas Explosion	Ex db eb IIC Gb
ATEX Certificate Gas	FM19ATEX0191U
ATEX Protection Against Gas Explosion	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

Rated Operational Voltage AC	230/400 V
Rated Service Current	20 A
Frequency	50/60 Hz
Rated Service Breaking Capacity	10 kA
Electrical Service Life	2 x 10⁴
Mechanical Service Life	2 x 10⁴
1st Auxiliary Function	None
Voltage 1st Auxiliary Function AC	-
Max. Current 1st Auxiliary Function	-
2nd Auxiliary Function	None
Max. Voltage 2nd Auxiliary Function DC	-
Tripping Characteristic	C
Number of Poles	3 poles + N

Mechanical Characteristics

Ambient Conditions

Ambient Temperature	-40 °C ... 70 °C (-40 °F ... 158 °F)
Ambient Temperature Note	Different ambient temperatures based on current certificates, on request

Mechanical Specifications

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 Size AWG	16 AWG
Maximum Connection Terminal Size AWG	4 AWG
Minimum Connection Terminal Size 2	1.5 mm²
Maximum Connection Terminal Size 2	10 mm²
Connection Terminal Size 2 AWG min.	16 AWG
Connection Terminal Size 2 AWG max.	8 AWG
Minimum Tightening Torque	2 N·m
Maximum Tightening Torque	3 N·m
Connection Terminal Note	Connection of 2 conductors (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 combinations of connection terminal sizes are indicated in the operating manual.

Dimensions

Width	110 mm (4.33 in)
Length	165 mm (6.5 in)
Mounting Depth	138.3 mm (5.44 in)

Weight

Weight

1.8 kg (3.969 lb)

Mounting / Installation

Tightening Torque	2–3 N·m (17.7 ... 26.6 lbf·in)
Auxiliary Contact Tightening Torque	0.4–0.6 N·m (3.5 ... 5.3 lbf·in)

Technical Drawings

Tripping Characteristic Curve C

The graph shows the tripping characteristic for a Type C circuit breaker, indicating the relationship between multiples of the rated current and tripping time in seconds and minutes. It is divided into AC and DC curves, with a note indicating the limit from the cold state.

Overall Dimensions (all dimensions in mm [inches])

Diagram showing the external dimensions of the circuit breaker, including width, length, and mounting depth. It indicates the product is 8530/1; 4 division units.

Accessories

Quadruple Locking Device

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

Description	Article Number
Quadruple locking device for individual locking with up to 4 cylinder locks	227232

Fixing Kit

Description	Article Number
A fixing kit for mounting the component onto a mounting plate without a DIN rail.	276618

Cylinder Lock

Description	Article Number
For locking (shackle Ø 3)	107115

Subject to technical modifications, dimensions, weights, construction types, and delivery possibilities. Figures are for illustrative purposes only.

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