ABB - Electrification THQC2120LL - Q line circuit breakers are one-inch wide per pole, compact, thermal-magnetic devices designed for residential and commercial applications. The QC breakers are lug-lug versions of the Q Line and are available for 35mm DIN rail mounting. 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 and can be ordered with auxiliary contact and shunt trip accessories. 20LL Amps 20 A
ABB - Electrification

THQC2120LL

UPC: 783164109184

Contact for Pricing

Overview

The ABB THQC2120LL is a 20 Amp, single-pole Q Line circuit breaker designed for reliable thermal-magnetic protection in residential and commercial electrical systems. This compact breaker features a one-inch width per pole, optimizing panel space. The QC (lug-lug) version is specifically configured for mounting on standard 35mm DIN rails, offering versatile installation options for OEM applications, load centers, and lighting panels. Engineered for safety and reliability, the THQC2120LL incorporates ABB's Quick-make/Quick-break mechanisms for rapid fault response and a common trip bar for simultaneous pole disconnection. An easily visible trip indication ensures quick identification of tripped circuits, simplifying troubleshooting. This circuit breaker is built, tested, and listed to UL and cUL standards (UL 489). It is rated for 120/240V AC and is UL Listed as HACR (heating, air conditioning, and refrigeration) and SWD (Switching Duty) rated for 120 Vac fluorescent lighting loads. The 22,000 AIC (Amperes Interrupting Capacity) rating ensures safe interruption of fault currents. The THQC2120LL is compatible with auxiliary contact and shunt trip accessories for expanded control capabilities. Manufactured by ABB Electrification, this breaker combines precise operation with durable construction for dependable circuit protection. SKU: THQC2120LL.
  • 20 Amp, 1-Pole Thermal-Magnetic Circuit Breaker
  • Compact 1-inch width per pole design
  • Lug-lug configuration for 35mm DIN rail mounting
  • Quick-make/Quick-break mechanism and common trip bar
  • UL & cUL Listed (UL 489), HACR & SWD Rated
  • Lug-lug design for 35mm DIN rail mounting
  • Optional auxiliary contact and shunt trip accessories

Specifications

Amperage Rating
20A
Application
High In Rush Load
Connection Type
Lug-lug
Current Rating
20 A
Frame
Q-Line
Interrupt Rating
10kA@120 Vac / 10kA@120/240 Vac
Load Rating
HACR
Mounting Type
35mm DIN Rail
Number Of Poles
2
Poles
1P
Series
Q Line
Size
1 inch 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 QC breakers are lug-lug versions of the Q Line and are available for 35mm DIN rail mounting. 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 and can be ordered with auxiliary contact and shunt trip accessories. 20LL Amps 20 A
Standard
E11592
Trip Range
Non-Interchangeable
Trip Range, Maximum
Non-Interchangeable
Trip Range, Minimum
Non-Interchangeable
Trip Type
LI
Package Dimensions (L x W x H)
4 IN x 2 IN x 3 IN
Package Dimensions (L x W x H)
10.16 cm x 5.08 cm x 7.62 cm
Package Weight (Imperial)
0.791 L
Package Weight (Metric)
0.359 kg
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.
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

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Ground Lug

DNGL

Ground Lug
ZCT,LZR-030(V),EMPR,EXP

76512124011

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

83411621001

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Frequently Asked Questions

What standards does the THQC2120LL comply with?

The THQC2120LL is built, tested, and listed to UL and cUL standards (UL 489).

What mounting type does the THQC2120LL use?

The THQC2120LL is designed for 35mm DIN rail mounting.

What is the pole configuration for the THQC2120LL?

The THQC2120LL is available in 1, 2, and 3 pole versions.

What is the operating voltage for the THQC2120LL?

The THQC2120LL operates on 120/240V AC.

Is the THQC2120LL suitable for HACR applications?

Yes, the THQC2120LL is UL Listed as HACR (heating, air conditioning, and refrigeration) rated.

Can the THQC2120LL be used with auxiliary contacts?

Yes, the THQC2120LL can be ordered with auxiliary contact and shunt trip accessories.

What is the interrupting rating of the THQC2120LL?

The THQC2120LL is rated for 10,000 AIC as per UL 489 standards.

Is the THQC2120LL compatible with fluorescent lighting loads?

Single-pole 15-20A versions of the Q Line are UL Listed as SWD (Switching Duty) rated for 120V AC fluorescent lighting loads.

How to Install the ABB THQC2120LL Circuit Breaker

Step-by-step guide to mounting and wiring the THQC2120LL on a 35mm DIN rail.

Estimated time: 15m

Tools needed:

Phillips screwdriver, Wire strippers, Crimping tool

Supplies needed:

35mm DIN rail, 12 AWG copper wire, Cable lugs

  1. Prepare the DIN rail

    Ensure the 35mm DIN rail is securely mounted in the distribution board and free of obstructions.

  2. Mount the circuit breaker

    Align the THQC2120LL with the DIN rail, then snap it into place by pressing firmly until it clicks.

  3. Connect the wires

    Insert the line and load wires into the lug terminals, ensuring proper torque (typically 20-25 in-lbs) and secure crimping.

  4. Verify installation

    Visually confirm the breaker is fully seated on the DIN rail and the trip indicator is in the reset position.

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.