R. STAHL 8530/1-MCB-STA103N-B63-000-4 Circuit Breaker

Article Number: 293852

Product Overview

The R. STAHL 8530/1-MCB-STA103N-B63-000-4 circuit breaker is designed for system technology applications, offering robust current limitation and high breaking capacity (10, 15, or 25 kA). This results in reduced stress on electrical lines and improved selectivity with upstream fuses. The modular design allows for flexible configurations, available in 1 to 4-pole models with nominal currents from 0.5–63 A. The maximum mounting width is 4.5 division units.

Key features include:

Separating function according to EN 60947-2
Energy limitation class 3
Easy replacement or expansion of installations due to modular design
Simple mounting via DIN rail snap-on in Ex e enclosures
Fixed thermal and magnetic trip adjustment
Ergonomic operating lever for safe connection and disconnection
Padlockable (accessories) for protection against reconnection during maintenance

Technical Data

Explosion Protection

Applications (zones): 1, 2
Applications (zones) Note: Usable in zones 21/22 with protection by Ex tb/tc enclosure
IECEX gas certification: IECEX FMG 19.0029U
IECEx gas explosion protection: Ex db eb IIC Gb
ATEX gas certification: FM19ATEX0191U
ATEX gas explosion protection: II 2 G Ex db eb IIC Gb
Certifications: ATEX (FM), Brazil (ULB), China (CQST), IECEX (FM)
Certificate of conformity: Certificate of conformity (ATEX)

Electrical Data

Rated operating voltage AC: 230/400 V
Rated operating current: 63 A
Frequency: 50/60 Hz
Rated switching capacity: 10 kA
Electrical endurance: 10⁴
Mechanical endurance: 2 x 10⁴
1st Auxiliary function: None
Rated voltage 1st auxiliary function AC: -
Max. current 1st auxiliary function: -
2nd Auxiliary function: None
Max. voltage 2nd aux. function DC: -
Trip characteristic: B
Number of poles: 3 pole + N

Environmental Conditions

Ambient temperature: -40 °C ... 70 °C
Ambient temperature (Fahrenheit): -40 °F ... 158 °F
Ambient temperature Note: Divergent ambient temperatures based on valid certificates upon request

Mechanical Data

Degree of protection (IP) (IEC 60529): IP2X
Enclosure material: Thermoplastic
Connection terminal cross-section min.: 1.5 mm²
Connection terminal cross-section max.: 25 mm²
Connection terminal AWG min.: 16 AWG
Connection terminal AWG max.: 4 AWG
Connection terminal 2 cross-section min.: 1.5 mm²
Connection terminal 2 cross-section max.: 10 mm²
Connection terminal 2 AWG min.: 16 AWG
Connection terminal 2 AWG max.: 8 AWG
Tightening torque min.: 2 N·m
Tightening torque max.: 3 N·m
Connection terminal Note: 2 conductor connections (upper and lower chamber simultaneously): max. upper and lower chamber 16 / 10 mm² (only a difference in cross-section between the upper and lower chamber can be fitted). Permitted connection cross-section combinations are listed in the user 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 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 Diagrams

Trip Time Curve: A graph illustrating the trip time characteristics for AC and DC, with 'B' as the trip characteristic. It shows time in seconds and minutes against current multiples.

Measurement Diagram: A diagram showing the dimensions of the circuit breaker in millimeters and inches. Key dimensions include width (110 mm / 4.33 in), length (165 mm / 6.50 in), and mounting depth (138.3 mm / 5.44 in). It also indicates the unit is 4 division units.

Accessories

Cylinder lock: For locking (Ø 3 mm / 0.12 in shackle). Article Number: 107115
Quadruple immobilization device: Locking/tagging pliers for individual component locking using up to 4 cylinder locks. Article Number: 227232
Fixing kit: A fixing set for mounting the component on the mounting plate without a top-hat rail. Article Number: 276618

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