ABB - Electrification TEYD3050B - The TEY is a one-inch wide per pole, compact, "bolt-on" circuit breaker for use on grounded 480Y/277 Vac systems. The bolt-on mounting base accessory makes the TEY suitable for varied applications as a lug-lug breaker. All TEY circuit breakers feature Quick-make / Quick-break mechanisms, common trip bars, and easy to spot trip indication to ensure safety and reliability. TEYD breakers are available in 1, 2, and 3 pole versions 2&3 pole versions can be ordered with auxiliary contact, shunt trip, undervoltage release, or bell alarm accessories. TEYx Circuit Breaker 3P 50A
ABB - Electrification

TEYD3050B

UPC: 783164461787

Contact for Pricing

Overview

The ABB TEYD3050B is a 3-pole, 50A bolt-on circuit breaker designed for grounded 480Y/277 Vac systems, ideal for lighting panelboards, including ABB A-Series. This compact breaker features a one-inch width per pole, optimizing panel space in commercial and industrial applications. The TEYD3050B includes a Quick-make/Quick-break mechanism for consistent operation under load and common trip bars to ensure coordinated tripping across all poles, preventing single-pole faults from compromising system integrity. With a 25kA interrupting rating at 480/277 Vac, the TEYD3050B provides robust short-circuit protection in demanding environments. It supports wire ranges from #10 to #4 AWG for solid or stranded conductors, offering flexible installation options. The breaker is UL listed for Heating, Air Conditioning, Refrigeration (HACR) and High-Intensity Discharge (HID) applications, ensuring compliance with critical standards. Optional accessories—such as auxiliary contacts, shunt trips, undervoltage releases, and bell alarms—enhance functionality for advanced applications like motor control centers, panelboards, and distribution boards. The bolt-on mounting base (TEY3B or TEY3B125) ensures compatibility with standard panel configurations, reducing installation time and simplifying retrofits. Easy-to-spot trip indication provides immediate visual feedback for diagnostics, minimizing downtime during maintenance or troubleshooting. The TEYD3050B is part of ABB’s TEY family of circuit breakers, which are engineered for reliability and space efficiency in commercial buildings, industrial facilities, and infrastructure projects where performance and compliance are essential.
  • 3-pole, 50A bolt-on circuit breaker for grounded 480Y/277 Vac systems
  • One-inch width per pole for compact panel installation
  • 25kA interrupting rating at 480/277 Vac for robust short-circuit protection
  • Supports wire ranges from #10 to #4 AWG (solid or stranded conductors)
  • UL listed for HACR and HID applications; optional accessories available
  • Supports #10 to #4 AWG wire range (solid or stranded)
  • UL listed for HACR and HID applications
  • Compatible with bolt-on mounting bases (TEY3B, TEY3B125)
  • Optional accessories: auxiliary contacts, shunt trips, undervoltage releases, bell alarms
  • Easy-to-spot trip indication for quick diagnostics

Specifications

Amperage Rating
50A
Application
Thermal Magnetic
Connection
#10-#4
Connection Type
Lug-lug
Current Rating
50 A
Frame
TEYD
Interrupt Rating
65kA@120/240 Vac, 65kA@240 Vac,25kA@480Y/277 Vac
Interrupting Rating
25 kA
Mounting Type
Bolt-On
Number Of Poles
3
Poles
3P
Series
TEY
Special Features
The TEY is a one-inch wide per pole, compact, "bolt-on" circuit breaker for use on grounded 480Y/277 Vac systems. The bolt-on mounting base accessory makes the TEY suitable for varied applications as a lug-lug breaker. All TEY circuit breakers feature Quick-make / Quick-break mechanisms, common trip bars, and easy to spot trip indication to ensure safety and reliability. TEYD breakers are available in 1, 2, and 3 pole versions 2&3 pole versions can be ordered with auxiliary contact, shunt trip, undervoltage release, or bell alarm accessories. TEYx Circuit Breaker 3P 50A
Standard
E11592
Trip Range
Yes
Trip Range, Maximum
Yes
Trip Range, Minimum
Yes
Trip Type
LI
Voltage Rating
480Y/277 VAC
Package Dimensions (L x W x H)
5.375 IN x 3 IN x 3.5 IN
Package Dimensions (L x W x H)
13.6525 cm x 7.62 cm x 8.89 cm
Package Weight (Imperial)
3.250 L
Package Weight (Metric)
1.474 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

Does the TEYD3050B have a quick-make/quick-break mechanism?

Yes, the TEYD3050B features a Quick-make/Quick-break mechanism for reliable operation under load.

What is the width per pole for the TEYD3050B?

The TEYD3050B has a width of 1 inch per pole, making it compact for panel installations.

Does the TEYD3050B include trip indication?

Yes, the TEYD3050B features easy-to-spot trip indication for quick diagnostics.

What is the interrupting rating of the TEYD3050B?

The TEYD3050B has a 25kA interrupting rating at 480/277 Vac.

What wire sizes does the TEYD3050B support?

The TEYD3050B supports wire sizes from #10 to #4 AWG, including solid or stranded conductors.

Is the TEYD3050B UL listed for specific applications?

Yes, the TEYD3050B is UL listed for Heating, Air Conditioning, Refrigeration (HACR) and High-Intensity Discharge (HID) applications.

Can the TEYD3050B be used with auxiliary accessories?

Yes, the TEYD3050B supports optional accessories such as auxiliary contacts, shunt trips, undervoltage releases, and bell alarms.

What is the operating voltage range for the TEYD3050B?

The TEYD3050B is designed for grounded 480Y/277 Vac systems.

What mounting options are available for the TEYD3050B?

The TEYD3050B is compatible with bolt-on mounting bases TEY3B and TEY3B125 for unit mount or lug-lug configurations.

Is the TEYD3050B suitable for motor control centers?

Yes, the TEYD3050B is designed for use in motor control centers, panelboards, and distribution boards.

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.