ABB - Electrification ST203M-D6 - ST203M-D6 Miniature Circuit Breaker ST203M-D6 Miniature Circuit Breaker D-Char., 10kA, 6A, 3P
ABB - Electrification

ST203M-D6

Contact for Pricing

Overview

The ABB ST203M-D6 Miniature Circuit Breaker (SKU: ST203M-D6) is a 3-pole device designed for precise overcurrent and short-circuit protection in industrial and commercial applications. Rated at 6A with a D-characteristic tripping curve, it is optimized for circuits with high inrush currents such as motors, transformers, and inductive loads. The breaker features a 10kA interrupting rating, ensuring safe disconnection of severe fault conditions without damage to the system. Part of ABB’s E6.2L-A/MS series, the ST203M-D6 is engineered for compact panelboards and distribution systems, offering reliable performance in tight spaces while maintaining high breaking capacity. Its thermal-magnetic trip unit provides rapid response to overloads and short circuits, protecting critical infrastructure. The breaker is compatible with standard DIN rail mounting and meets international safety standards including IEC 60898-1 and UL 1077, ensuring compliance for global applications. Ideal for control panels, machine protection, and industrial automation, the ST203M-D6 supports high-density installations without compromising performance. The D-characteristic ensures selective coordination in complex electrical networks, making it suitable for secondary distribution systems.
  • 3-pole design for balanced load distribution
  • 6A current rating with D-characteristic tripping curve for high inrush loads
  • 10kA interrupting rating for severe fault conditions
  • DIN rail mounting for compact panelboard installations
  • Compliant with IEC 60898-1 and UL 1077 safety standards

Specifications

Amperage Rating, Maximum
6 A
Amperage Rating, Minimum
6 A
Interrupt Rating
(240 V AC) 10 kA / (480Y / 277 VAC) 10 kA / (125 V DC) 10 kA
Number of Poles
3
Special Features
ST203M-D6 Miniature Circuit Breaker ST203M-D6 Miniature Circuit Breaker D-Char., 10kA, 6A, 3P
Tripping Characteristic
D
Voltage Rating
(240 V AC) / (125 V DC)
Package Dimensions (L x W x H)
2.72 IN x 2.07 IN x 3.46 IN
Package Dimensions (L x W x H)
6.9088 cm x 5.2578 cm x 8.7884 cm
Package Weight (Imperial)
1.300 L
Package Weight (Metric)
0.590 kg
One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.

LCMA6-8-C

One-hole, metric conductor, standard barrel with window lug, 4-6mm wire, M8 stud hole.
JB5-2 2 POLE JUMPER 5.2MM SPACING

1SNK905302R0000

JB5-2 2 POLE JUMPER 5.2MM SPACING
JB5-5 5 POLE JUMPER 5.2MM SPACING

1SNK905305R0000

JB5-5 5 POLE JUMPER 5.2MM SPACING
Ground Lug

DNGL

Ground Lug
ZCT,LZR-030(V),EMPR,EXP

76512124011

ZCT,LZR-030(V),EMPR,EXP
INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

83411621001

INTERLOCK UNIT,AR-12M(SEPERATE),GMC(D)-6~16M

Frequently Asked Questions

What is the interrupting rating of the ST203M-D6?

The ST203M-D6 has a 10kA interrupting rating, allowing it to safely disconnect severe fault conditions without damage.

What is the tripping characteristic of the ST203M-D6?

The ST203M-D6 features a D-characteristic tripping curve, optimized for high inrush currents common in motor and transformer circuits.

What type of trip unit does the ST203M-D6 use?

The ST203M-D6 uses a thermal-magnetic trip unit for overload and short-circuit protection.

Is the ST203M-D6 compatible with DIN rail mounting?

Yes, the ST203M-D6 is designed for standard DIN rail mounting in panelboards and distribution systems.

What applications is the ST203M-D6 suitable for?

The ST203M-D6 is ideal for protecting motors, transformers, and inductive loads in industrial and commercial control panels.

Frequently Asked Questions about ABB - Electrification

What industries and applications are Jokab Safety products used for?

Jokab Safety products are specifically designed for machine safety applications across multiple critical industrial sectors, including Food and Beverage, Packaging, and Material Handling industries. Their safety solutions cover a wide range of machine safeguarding needs, such as safety light guards, safety controllers, safety relays, safety edges, safety mats, and two-hand control devices that protect personnel and equipment in complex industrial automation environments.

What technical support does Jokab Safety offer?

Jokab Safety offers comprehensive technical support through multiple channels, including a dedicated technical support phone line at (888) 385-1221 (Option 1) and email support at [email protected]. For advanced technical assistance, customers can contact their specialized Jokab Tech Support at (519) 982-0976 or email [email protected]. Additionally, they provide product specialist support through Jeff Leslie, who can be reached at (519) 982-0976, offering in-depth application and technical guidance.

What are the main product lines offered by Jokab Safety?

Jokab Safety offers a comprehensive range of machine safety products including safety light guards (Orion), safety controllers (Pluto), safety relays (Sentry), safety edges, safety contact mats, safety locks (Gkey), and safety sensors with OSSD and DYNlink interfaces. Their product lines are specifically designed for industrial applications in food and beverage, packaging, and material handling industries, providing robust safety solutions for machine guarding and personnel protection.

What are the key features of Jokab Safety products?

Jokab Safety products offer comprehensive industrial safety solutions with key features including: highest safety certification levels (up to PL e/Cat 4), extensive fault detection, multiple safety device types (optical safety devices, pressure sensitive devices, sensors, switches, locks, emergency stops), and innovative DYNlink technology that reduces cable requirements and simplifies installation. Their products are certified, verified, and compatible with major industrial automation systems like B&R, featuring easy M12 connector connections and a wide range of adapters to streamline safety implementation.

What certifications and standards do ABB - Electrification products comply with?

ABB - Electrification products comply with a comprehensive range of international certifications and standards, including UL (United States), CSA (Canada), CE (European Community), UKCA (United Kingdom), EAC (Russia), and C-Tick (Australia & New Zealand). Our products meet critical international standards such as IEC 60947 series for low-voltage switchgear, functional safety standards EN 61800-5-2 and ISO 13849-1, and marine classification standards from Bureau Veritas, DNV, and Lloyd's Register of Shipping.

What industries and applications are ABB - Electrification products used for?

ABB - Electrification products are engineered for critical applications across multiple industries, including Energy, Oil & Gas, Manufacturing, Power Generation, HVAC, Marine, Food & Beverage, Mining, Pulp & Paper, Water Treatment, and Automotive. Their solutions cover essential electrical infrastructure needs such as switchgear, power distribution systems, circuit protection, digital control technologies, and drive systems designed for high-reliability environments with a strong focus on sustainability, efficiency, and safety.

What technical support does ABB - Electrification offer?

ABB - Electrification offers comprehensive technical support through multiple channels, including a dedicated technical support hotline at 888-385-1221 (Option 1), available 7:00 a.m. - 5:00 p.m. CST, Monday-Friday. Their support services encompass 24/7/365 emergency services, on-site support, remote monitoring and diagnostics, installation and commissioning, equipment assessments, repair coordination, and multi-vendor technical assistance. Customers can also access resources like personnel safety training, disaster recovery support, and service agreements tailored to their specific electrification needs.

What are the main product lines offered by ABB - Electrification?

ABB - Electrification offers a comprehensive range of electrical distribution and protection products, including circuit monitoring systems, panelboards, switchgear, motor control centers, circuit breakers, softstarters, and power distribution solutions. Key product lines span low and medium voltage applications across utilities, commercial, industrial, healthcare, and manufacturing sectors, with specialized offerings like the ReliaGear® panelboards, SMISSLINE TP bus systems, and Ekip UP protection and metering relays.

What are the key features of ABB - Electrification products?

ABB - Electrification products feature advanced integrated design elements that enhance industrial performance and reliability. Key features include harmonics and EMC design, integrated DC choke, removable terminals for fast installation, USB ports for troubleshooting, and integrated Safe Torque Off (STO) functionality. The products deliver superior motor control capabilities, support both induction and permanent magnet motors, and offer robust operational features like side-by-side mounting without derating and operation at temperatures up to 45°C. Additionally, ABB's Electrification solutions emphasize digital innovation, with technologies like Novolink enabling predictive maintenance, enhanced analytics, and seamless system integration.

What communication protocols do ABB - Electrification products support?

ABB - Electrification products support a comprehensive range of industrial communication protocols, including Modbus RTU, PROFIBUS DP, PROFINET, EtherNet/IP, CANopen, DeviceNet, and IEC 61850. These protocols enable flexible connectivity across multiple industrial automation platforms, with support for various network topologies and high-speed data transmission up to 100 Mbps.