ABB - Electrification TEY320ST12 - 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. TEY breakers are available in 1, 2, and 3 pole versions and can be ordered with auxiliary contact and shunt trip accessories. MCCB 3P 20A W/120-277VAC SHUNT TRIP
ABB - Electrification

TEY320ST12

UPC: 783164196627

Contact for Pricing

Overview

The ABB TEY320ST12 is a 3-pole Molded Case Circuit Breaker (MCCB) designed for grounded 480Y/277 Vac systems. This compact breaker features a 1-inch wide per pole footprint, making it ideal for space-constrained applications, particularly within lighting panelboards such as ABB A-Series and RE/RS panels. With a 20A current rating and a 14kAIC short circuit interruption capacity at 480/277 Vac, the TEY320ST12 provides reliable protection against electrical faults. Key operational features include Quick-make/Quick-break mechanisms for consistent operation, common trip bars for enhanced safety, and an easily visible trip indication for rapid diagnostics. The integrated 120-240VAC shunt trip accessory allows for remote tripping, a critical function for advanced control and safety systems. This breaker is UL listed for HACR (Heating, Air Conditioning, Refrigeration) applications and is suitable for High-Intensity Discharge (HID) lighting applications up to 50A. The bolt-on mounting base accessory (TEY3B or TEY3B125) facilitates straightforward installation in lug-lug connected applications. Manufactured in the US, the TEY320ST12 meets stringent industry standards, delivering dependable electrical protection. The TEY family of circuit breakers, including the TEY320ST12, are one-inch wide per pole, compact, bolt-on circuit breakers for use on grounded 480Y/277 Vac systems. Short circuit ratings at 480/277 Vac for the TEY family are 14kAIC. The TEY320ST12 is a direct replacement for TEY breakers and can be substituted by TEYF, TEYL breakers. SKU: TEY320ST12. Manufacturer: ABB - Electrification.
  • 3-Pole Molded Case Circuit Breaker (MCCB)
  • 20A Current Rating
  • 480Y/277 Vac System Voltage
  • 14kAIC Short Circuit Interruption Capacity at 480/277 Vac
  • Integrated 120-240VAC Shunt Trip Accessory
  • UL listed for HACR and HID lighting applications up to 50A
  • Bolt-on mounting base accessory (TEY3B or TEY3B125) for lug-lug applications
  • Compact 1-inch wide per pole design for space-saving installation

Specifications

Amperage Rating
20A
Application
Thermal Magnetic
Color
Blue
Connection
14-8 kcmil / 12-8 kcmil
Connection Type
Lug-lug
Current Rating
20 A
Frequency
60 Hz
Interrupt Rating
14kA@277 Vac / 65kA@120 Vac / 65kA@120/240 Vac / 65kA@240 Vac
Load Rating
HACR / HID
Material
Molded Case
Material
Poly
Mounting Type
Bolt-On
Number Of Poles
3
Poles
3P
Series
TEY
Size
1 inch per pole
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. TEY breakers are available in 1, 2, and 3 pole versions and can be ordered with auxiliary contact and shunt trip accessories. MCCB 3P 20A W/120-277VAC SHUNT TRIP
Standard
E11592
Trip Range
Non-Interchangeable
Trip Range, Maximum
Non-Interchangeable
Trip Range, Minimum
Non-Interchangeable
Trip Type
LI
Voltage Rating
480Y/277 VAC
Package Dimensions (L x W x H)
5 IN x 3 IN x 3 IN
Package Dimensions (L x W x H)
12.7 cm x 7.62 cm x 7.62 cm
Package Weight (Imperial)
2.005 L
Package Weight (Metric)
0.910 kg
Ground Lug

DNGL

Ground Lug
RELEASE UNDERVOLTAGE BS DWB400 D70

BS DWB400D70

RELEASE UNDERVOLTAGE BS DWB400 D70
LUG LT1A-UBW800

LT1A-UBW800

LUG LT1A-UBW800
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 pole configuration of the TEY320ST12?

The TEY320ST12 is a 3-pole circuit breaker.

What is the interrupting rating of the TEY320ST12?

The TEY320ST12 has a 14kAIC interrupting rating at 480/277 Vac.

What voltage systems is the TEY320ST12 designed for?

The TEY320ST12 is designed for grounded 480Y/277 Vac systems.

Does the TEY320ST12 include a shunt trip accessory?

Yes, the TEY320ST12 is equipped with a 120-277VAC shunt trip accessory for remote tripping.

What is the wire range for the TEY320ST12?

The TEY320ST12 supports wire sizes from #14 to #10 AWG.

Is the TEY320ST12 suitable for HID lighting applications?

Yes, the TEY320ST12 is UL listed for High-Intensity Discharge (HID) lighting applications up to 50A.

Is the TEY320ST12 UL listed for HACR applications?

Yes, the TEY320ST12 is UL listed for Heating, Air Conditioning, and Refrigeration (HACR) applications.

What mounting accessories are compatible with the TEY320ST12?

The TEY320ST12 is compatible with bolt-on mounting base accessories TEY3B or TEY3B125.

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.