R. STAHL 8530 Series Miniature Circuit Breaker

Model: 8530/1-MCB-STA103-C50-000-3 | Art. No. 272183

Components for system solutions

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), ensuring low load on cables and high 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 operation
Padlocks (Accessories) prevent accidental switching 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

Declaration of conformity: ATEX (FM), Brazil (ULB), China (CQST), IECEx (FM)
Certificate of conformity: Certificate of conformity (ATEX), China (CCC)

Electrical Data

Parameter	Value
Rated operational voltage AC	230/400 V
Rated operational current	50 A
Frequency	50/60 Hz
Rated switching capacity	10 kA
Electrical service life	10⁴
Mechanical service life	2 x 10⁴
1st auxiliary function	without
1st auxiliary function for AC rated voltage	-
1st auxiliary function for rated current max.	-
2nd auxiliary function	without
2nd auxiliary function voltage max. DC	-
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.) The permitted combinations of connection cross-sections can be found in the operating instructions.

Dimensions

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 illustrates the tripping characteristic 'C' for AC and DC, showing the relationship between the multiple of rated current and tripping time in seconds and minutes. The graph indicates typical tripping curves from a cold state.

Dimensional Drawings:

Diagrams show the overall dimensions of the circuit breaker in millimeters and inches, including width, length, and mounting depth. Different views are provided, including a 3-pole version without 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 securing the component on the mounting plate without a DIN rail.

Art. No.: 276618

R. STAHL reserves the right to make alterations to technical data, dimensions, weights, designs, and products without notice. Illustrations are not binding.

	R. STAHL 8530/1-MCB-STA103-C50-000-3 Miniature Circuit Breaker - Technical Data and Features Detailed technical specifications, features, and accessories for the R. STAHL 8530/1-MCB-STA103-C50-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and installation information.
	R. STAHL 8530/1-MCB-STA103-C50-000-3 Circuit Breaker Technical Data Technical specifications and features of the R. STAHL 8530/1-MCB-STA103-C50-000-3 circuit breaker, including explosion protection, electrical data, mechanical data, and accessories.
	R. STAHL MCB Miniature Circuit Breaker 8530/1-MCB-STA103-C25-000-3: Technical Specifications and Features Detailed technical specifications, features, and accessories for the R. STAHL 8530/1-MCB-STA103-C25-000-3 miniature circuit breaker, including explosion protection, electrical data, dimensions, and mounting information.
	R. STAHL 8530/1-MCB-STA103-C50-000-3 Miniature Circuit Breaker for Line Protection Technical specifications and features of the R. STAHL 8530/1-MCB-STA103-C50-000-3 miniature circuit breaker, designed for line protection in hazardous environments. Includes details on explosion protection, electrical characteristics, mechanical specifications, and accessories.
	R. STAHL MCB Miniature Circuit Breaker 8530/1-MCB-STA103-C16-000-3: Technical Specifications and Features Detailed technical specifications, features, and dimensions for the R. STAHL MCB Miniature Circuit Breaker, model 8530/1-MCB-STA103-C16-000-3. Includes explosion protection, electrical data, mechanical data, and accessories.
	R. STAHL 8530/1-MCB-STA103-B6-000-3 Miniature Circuit Breaker - Technical Specifications Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-B6-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories. Suitable for system solutions and hazardous environments.
	R. STAHL 8530/1-MCB-STA103-B25-000-3 Miniature Circuit Breaker - Technical Data Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-B25-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories. Suitable for system solutions.
	R. STAHL 8530/1-MCB-STA103-C40-000-3 Miniature Circuit Breaker - Technical Specifications Detailed technical specifications for the R. STAHL 8530/1-MCB-STA103-C40-000-3 miniature circuit breaker, including explosion protection, electrical data, mechanical data, and accessories.