ABB - Electrification ST204M-D50 - ST204M-D50 Miniature Circuit Breaker ST204M-D50 Miniature Circuit Breaker D-Char., 5kA, 50A, 4P
ABB - Electrification

ST204M-D50

Contact for Pricing

Overview

The ABB ST204M-D50 is a 4-pole miniature circuit breaker (MCB) from the ST200M series, designed for reliable overcurrent and short-circuit protection. This specific unit, SKU ST204M-D50, features a 50A current rating and a 5kA interrupting capacity at 480Y/277V AC. Its D-characteristic trip curve is optimized for applications with high inrush currents, such as motors, transformers, and other inductive loads, ensuring it doesn't trip unnecessarily during startup while still providing essential protection against faults. Manufactured by ABB - Electrification, this breaker adheres to UL 1077 and CSA 22.2 No. 235 standards, guaranteeing safety and performance in industrial and commercial electrical systems. The ST204M-D50 mounts easily onto a 35mm DIN rail, facilitating straightforward installation in distribution boards and control panels. The ST200M family offers a comprehensive range of MCBs with current ratings from 0.5A to 63A and various trip curves (B, C, D, K, Z), along with optional accessories like auxiliary contacts and shunt trips, providing flexibility for diverse electrical protection needs. This 4-pole configuration offers complete circuit isolation and protection across all phases.
  • 4-Pole Miniature Circuit Breaker (MCB)
  • 50A Rated Current
  • 5kA Short Circuit Interrupt Rating
  • D-Characteristic Trip Curve for Inductive Loads
  • 480Y/277V AC Voltage Rating
  • 35mm DIN Rail Mounting
  • Complies with UL 1077 and CSA 22.2 No. 235
  • Part of ABB's ST200M Series

Specifications

Amperage Rating
50 A
Amperage Rating, Maximum
50 A
Amperage Rating, Minimum
50 A
Current Rating
50 A
Interrupt Rating
(240 V AC) 10 kA / (480Y / 277 VAC) 5 kA / (125 V DC) 10 kA
Number of Poles
4
Poles
4P
Series
ST204M
Special Features
ST204M-D50 Miniature Circuit Breaker ST204M-D50 Miniature Circuit Breaker D-Char., 5kA, 50A, 4P
Trip Type
D
Tripping Characteristic
D
Voltage Rating
(240 V AC) / (125 V DC)
Package Dimensions (L x W x H)
2.72 IN x 2.76 IN x 3.46 IN
Package Dimensions (L x W x H)
6.9088 cm x 7.0104 cm x 8.7884 cm
Package Weight (Imperial)
1.550 L
Package Weight (Metric)
0.703 kg
Ground Lug

DNGL

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

83411621001

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

76512124011

ZCT,LZR-030(V),EMPR,EXP
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
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.

Frequently Asked Questions

What is the current rating of the ABB ST204M-D50?

The ABB ST204M-D50 has a rated current of 50 Amperes.

What is the short circuit interrupting capacity?

The ST204M-D50 has a short circuit interrupting capacity of 5kA.

What type of trip curve does this breaker have?

This breaker features a D-characteristic trip curve, suitable for inductive loads with high inrush currents.

How many poles does the ST204M-D50 have?

The ST204M-D50 is a 4-pole miniature circuit breaker.

What is the voltage rating for this circuit breaker?

The voltage rating for the ST204M-D50 is 480Y/277 V AC.

How is the ST204M-D50 mounted?

The ST204M-D50 is designed for 35mm DIN rail mounting.

Which standards does the ST204M-D50 comply with?

This circuit breaker complies with UL 1077 and CSA 22.2 No. 235 standards.

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.