ABB - Electrification Signature Partner Distributor
ABB - Electrification THQB21WY20 - Q line circuit breakers are one-inch wide per pole, compact, thermal-magnetic devices designed for residential and commercial applications. The QB breakers are bolt-on versions of the Q Line used for bolting to the bus connections of load centers and lighting panels. All Q Line circuit breakers feature Quick-make / Quick-break mechanisms, common trip bars, and easy to spot trip indication to ensure safety and reliability. Q Line breakers are available in 1, 2, and 3 pole versions, can be ordered with auxiliary contact and shunt trip accessories, and can be ordered for use in HID applications. WY20 Amps 20 A
ABB - Electrification

THQB21WY20

UPC: 783164103557


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Specification Sheet

Contact for Pricing

Overview

The ABB Q Line QB21WY20 is a 20 ampere, 2-pole bolt-on circuit breaker designed for residential and commercial electrical systems. This thermal-magnetic device occupies just one inch of space per pole, making it ideal for compact load centers and lighting panels where space efficiency is critical. The QB21WY20 features ABB’s proven Quick-make/Quick-break mechanism, ensuring reliable operation during both make and break cycles, which reduces arcing and extends the breaker’s lifespan. Engineered with common trip bars, this breaker disconnects all poles simultaneously in the event of an overload or fault, enhancing safety and preventing damage to connected equipment. The QB21WY20 includes easy-to-spot trip indication, allowing for quick visual confirmation of tripped circuits and reducing troubleshooting time. It is UL 489 and cUL listed, meeting stringent safety standards for molded case circuit breakers. Available in 1, 2, and 3-pole configurations, the QB21WY20 can be customized with auxiliary contacts and shunt trip accessories to meet specific application requirements. It is also suitable for High-Intensity Discharge (HID) applications, offering versatility for a wide range of electrical systems. With a 10,000 ampere interrupting rating (AIC), this breaker provides robust protection against short circuits and overloads in 120Vac systems. Built to ABB’s high standards of reliability and durability, the QB21WY20 is a trusted solution for protecting circuits in modern electrical installations.
  • 20A thermal-magnetic bolt-on circuit breaker
  • 2-pole configuration with 1-inch per pole sizing
  • Quick-make/Quick-break mechanism for reliable operation
  • Common trip bars for simultaneous disconnection
  • UL 489 and cUL listed with 10,000 AIC rating
  • UL 489 and cUL listed for safety and compliance
  • Suitable for HID applications and customizable with accessories
  • 10,000 AIC rating for robust short-circuit protection

Specifications

Connection Type
Bolt-on
Current Rating
20 A
Poles
1P
Series
Q Line
Series
Q Line QB21WY20
Size
1-inch wide per pole
Special Features
Q line circuit breakers are one-inch wide per pole, compact, thermal-magnetic devices designed for residential and commercial applications. The QB breakers are bolt-on versions of the Q Line used for bolting to the bus connections of load centers and lighting panels. All Q Line circuit breakers feature Quick-make / Quick-break mechanisms, common trip bars, and easy to spot trip indication to ensure safety and reliability. Q Line breakers are available in 1, 2, and 3 pole versions, can be ordered with auxiliary contact and shunt trip accessories, and can be ordered for use in HID applications. WY20 Amps 20 A
Package Dimensions (L x W x H)
2 IN x 3.5 IN x 4.5 IN
Package Dimensions (L x W x H)
5.08 cm x 8.89 cm x 11.43 cm
Package Weight (Imperial)
1.764 L
Package Weight (Metric)
0.800 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 interrupting rating of the QB21WY20?

The QB21WY20 has a 10,000 ampere interrupting rating (AIC).

Is the QB21WY20 suitable for HID applications?

Yes, the QB21WY20 is designed for High-Intensity Discharge (HID) applications.

What voltage rating does the QB21WY20 support?

The QB21WY20 supports 120Vac systems.

Can the QB21WY20 be used with auxiliary contacts?

Yes, the QB21WY20 can be ordered with auxiliary contact accessories.

What is the pole configuration of the QB21WY20?

The QB21WY20 is a 2-pole circuit breaker requiring 2 pole spaces (1P+1N).

Is the QB21WY20 UL listed?

Yes, the QB21WY20 is UL 489 and cUL listed.

What is the mounting type for the QB21WY20?

The QB21WY20 is a bolt-on circuit breaker designed for load centers and 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.