Components for System Solutions: MCB Miniature Circuit Breaker

Model: 8530/1-MCB-STA103-C40-000-3

Article Number: 272182

Product Overview

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

Key Features:

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 unintended switching 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), China (CCC)

Electrical Data

Rated operational voltage AC: 230/400 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: without
2nd auxiliary function: without
Tripping characteristic: C
No. of poles: 3-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. 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.)
Width: 83 mm (3.27 in)
Length: 165 mm (6.5 in)
Mounting depth: 138.3 mm (5.44 in)
Weight: 1.4 kg (3.087 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 displays tripping time in seconds and minutes against multiples of rated current for tripping characteristic C. The curves indicate tripping from a cold state for AC and DC.

Dimensional Drawings:

Diagrams show the dimensions of the circuit breaker in mm and inches. Key dimensions include width (83 mm / 3.27 in), length (165 mm / 6.50 in), and mounting depth (138.3 mm / 5.44 in).

3-pole, without auxiliary contact

A diagram illustrates the 3-pole configuration without an auxiliary contact.

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 fastening the component on the mounting plate without a DIN rail.
Art. No.: 276618

R. STAHL reserves the right to make alterations to the technical data, dimensions, weights, designs and products available without notice. The illustrations cannot be considered binding.

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