R. STAHL 8530/1-MCB-STA103N-C25-000-4 Line Protection Circuit Breaker

Article Number: 293858

System Components for System Technology

Product: Line Protection Circuit Breaker

The R. STAHL 8530 series line protection circuit breakers offer good current limitation for short circuits and high switching capacity of 10, 15, or 25 kA. This ensures minimal load on lines and high selectivity to upstream fuses. The components are modular 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 with modular circuit breakers
Simple plug-in mounting on a DIN rail in Ex e enclosures
Fixed thermal-magnetic releases
Ergonomic control lever for safe switching on and off
Padlock protection (accessories) prevents re-operation during maintenance

Technical Characteristics

Explosion Protection

Application Area (Zones): 1, 2
Application Area (Zones) Note: Usable in Zone 21 / 22 with Ex tb / tc enclosure protection
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)

Electrical Characteristics

Rated Operational Voltage AC: 230/400 V
Rated Service Current: 25 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
2nd Auxiliary Function: None
Tripping Characteristic: C
Number of Poles: 3 poles + N

Ambient Conditions

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

Mechanical Characteristics

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
Minimum AWG Connection Terminal Size 2: 16 AWG
Maximum AWG Connection Terminal Size 2: 8 AWG
Minimum Tightening Torque: 2 N·m
Maximum Tightening Torque: 3 N·m
Connection Terminal Note: 2 conductors (upper and lower chamber) simultaneously: Upper and lower chamber max. 16 / 10 mm² (Connection can be made with a maximum difference in cross-section between the upper and lower chamber.)
Allowed combination possibilities of connection terminals are indicated in the operating instructions.

Dimensions

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

Mounting / Installation

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

Technical Drawings

Technical drawings are subject to change.

Tripping Characteristic Curve C:

The graph shows the tripping characteristic for the circuit breaker, illustrating the relationship between multiples of the rated current (I/In) and tripping time in seconds for AC and DC circuits. The curve indicates the limit from the cold state.

Overall Dimensions (all dimensions in mm [inches])

Diagrams show the physical dimensions of the 8530/1 unit, indicating width, length, and mounting depth, as well as the configuration for 3 poles + N without auxiliary contact.

Accessories

Quadruple Locking Device

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

Part Number: 227232

Mounting Kit

Description: A mounting kit for fixing the component to a mounting plate without a DIN rail.
Part Number: 276618

Cylinder Lock

Description: For locking (shackle Ø 3)
Part Number: 107115

Technical specifications, dimensions, weights, construction types, and delivery options are subject to change. Figures are for indicative purposes only.

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