R. STAHL Miniature Circuit Breaker (MCB)

Model: 8530/1-MCB-STA101-C40-500-2

Art. No.: 294003

Product Overview

The R. STAHL 8530 series miniature circuit breakers are overcurrent devices designed for system solutions. They offer excellent current limiting for short circuits and a high switching capacity of 10, 15, or 25 kA, resulting in a low load on cables and high selectivity for upstream fuses. These components feature a modular design and are available in 1- to 4-pole versions for rated currents of 0.5-63 A. The maximum installation capacity is 4.5 subunits.

Key features include:

Isolation function in accordance with EN60947-2
Energy limitation class 3
Modular design for simple replacement or expansion
Easy installation: snaps onto the mounting rail in Ex e enclosures
Non-adjustable thermal and magnetic releases
Ergonomically shaped operating lever for safe switching
Padlocks (accessories) for protection against being switched on during maintenance

Technical Data

Explosion Protection

Application range (zones): 1, 2
Application range (Zone) note: For use in Zone 21/22 when protected by Ex tb/tc enclosure
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)
Declaration of conformity: Certificate of conformity (ATEX)

Electrical Data

Rated operational voltage AC: 230 V
Rated operational current: 40 A
Frequency: 50/60 Hz
Rated switching capacity: 10 kA
Electrical service life: 10⁴
Mechanical service life: 2 x 10⁴
1st auxiliary function: Auxiliary contact 1 change-over contact + fault signal contact 1 change-over contact
1st auxiliary function for AC rated voltage: 230 V
1st auxiliary function for rated current max.: 2 A
2nd auxiliary function: without
2nd auxiliary function voltage max. DC: -
Tripping characteristic: C
No. of poles: 1-pole

Ambient Conditions

Ambient temperature: -40 °C ... 70 °C
Ambient temperature (Fahrenheit): -40 °F ... 158 °F
Ambient temperature note: Deviating ambient temperatures based on current certificates available on request

Mechanical Data

Degree of protection (IP) (IEC 60529): IP2X
Enclosure material: Thermoplast
Connection cross section min.: 1.5 mm²
Connection cross-section max.: 25 mm²
Connection cross-section AWG min.: 16 AWG
Connection cross-section AWG max.: 4 AWG
Connection cross-section 2 min.: 1.5 mm²
Connection cross-section 2 max.: 10 mm²
Connection cross-section 2 AWG min.: 16 AWG
Connection cross-section 2 AWG max.: 8 AWG
Min. aux. cont. con. cr.-sect.: 0.5 mm²
Max. aux. cont. conn. cr.-sec.: 4 mm²
Min. aux. co. con. cr.-se. AWG: 18 (unece.unit.AWG)
Connection cross-section of auxiliary contact AWG max.: 14 (unece.unit.AWG)
Min. tightening torque: 2 N·m
Max. tightening torque: 3 N·m
Connection cross-section note: 2-conductor connection (upper and lower chamber at the same time): upper and lower chamber max. 16/10 mm² (A maximum difference of one cross section may be clamped between the upper and lower chamber.) The permitted combinations of connection cross-sections can be found in the operating instructions.

Dimensions

Width: 65 mm (2.56 in)
Length: 165 mm (6.5 in)
Mounting depth: 138.3 mm (5.44 in)

Weight

Weight: 1 kg (2.205 lb)

Mounting / Installation

Tightening torque: 2-3 N·m (17.7 to 26.6 lbf·in)
Tightening torque auxiliary contact: 0.4-0.6 N·m (3.5 to 5.3 lbf·in)

Technical Drawings

Subject to Alterations

Tripping Characteristic C:

A graph illustrates tripping time in seconds and minutes against multiples of rated current for AC and DC, showing the tripping curve from a cold state for a 1-pole auxiliary contact with change-over contacts.

Dimensional Drawings:

Diagrams show the overall dimensions of the MCB in mm [inches]. Key dimensions include width (65 mm [2.56 in]), length (165 mm [6.50 in]), and mounting depth (138.30 mm [5.44 in]).

Accessories

4-way locking device

A lock-out/tag-out hasp for individually locking the component using up to four cylinder locks.

Art. No.: 227232

Cylinder lock

For closing (bracket Ø 3)

Art. No.: 107115

Fastening set

A fastening set for mounting the component on the mounting plate without a DIN rail.

Art. No.: 276618

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