ABB - Electrification Signature Partner Distributor
ABB - Electrification ST203M-Z3NA - ST203M-Z3NA Miniature Circuit Breaker ST203M-Z3NA Miniature Circuit Breaker Z-Char., 10kA, 3A, 3P+NA
ABB - Electrification

ST203M-Z3NA

Contact for Pricing

Overview

The ABB ST203M-Z3NA Miniature Circuit Breaker (MCB) is engineered for precise overcurrent and short-circuit protection in low-voltage electrical systems. This 3-pole plus neutral (3P+NA) device, identified by SKU ST203M-Z3NA, features a Z-characteristic tripping curve. This characteristic makes it exceptionally suitable for protecting sensitive electronic loads, transformers, and semiconductor devices by enabling rapid response to minor overcurrents and short circuits. With a rated current of 3A, it ensures accurate protection against damage to wiring and equipment. The MCB boasts a significant breaking capacity of 10kA (10,000 amperes), providing robust protection against catastrophic failures under fault conditions. Its compact design, characteristic of the ABB ST203M series, is crucial for installations where space within electrical panels is limited, facilitating efficient layout and installation. Manufactured by ABB, a global leader in electrification, this circuit breaker exemplifies reliability and durable construction for long-term operational performance. The ST203M-Z3NA is suitable for a variety of applications, including residential and commercial electrical panels, light industrial machinery, office buildings, retail spaces, data centers, telecom installations, and renewable energy systems. Its Z-characteristic is specifically beneficial for applications requiring fast tripping on low overcurrents, such as those found in control circuits or with inductive loads where inrush currents are minimal but protection against sustained low-level faults is paramount. The 3P+NA configuration ensures comprehensive protection across all live conductors and the neutral, enhancing overall system safety and adherence to electrical standards. Originating from Switzerland (CH), this MCB is built to exacting standards.
  • ABB ST203M-Z3NA Miniature Circuit Breaker (MCB)
  • 3-pole plus neutral (3P+NA) configuration
  • Z-characteristic tripping curve for sensitive loads
  • Rated current of 3A
  • 10kA breaking capacity
  • Manufactured by ABB for unmatched reliability and performance

Specifications

Amperage Rating
3 A
Current Rating
3 A
Interrupt Rating
(240 V AC) 10 kA / (480Y / 277 VAC) 10 kA / (125 V DC) 10 kA
Number of Poles
3
Poles
3P+NA
Series
ST203M
Special Features
ST203M-Z3NA Miniature Circuit Breaker ST203M-Z3NA Miniature Circuit Breaker Z-Char., 10kA, 3A, 3P+NA
Trip Type
Z
Tripping Characteristic
Z
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 breaking capacity of the ABB ST203M-Z3NA MCB?

The ABB ST203M-Z3NA MCB has a breaking capacity of 10kA (10,000 amperes).

What type of tripping characteristic does the ST203M-Z3NA feature?

The ST203M-Z3NA features a Z-characteristic tripping curve.

What is the rated current for the ABB ST203M-Z3NA?

The rated current for the ABB ST203M-Z3NA is 3A.

What types of loads is the Z-characteristic ideal for?

The Z-characteristic is ideal for protecting sensitive electronic loads, transformers, and semiconductor devices.

What does the 3P+NA configuration signify on this MCB?

The 3P+NA configuration means the circuit breaker has 3 poles for live conductors and an additional pole for the neutral.

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.