ABB - Electrification Signature Partner Distributor
ABB - Electrification 9T33A2673 - ABB's 9T33 Single phase low-voltage dry type transformers are for balanced 3-wire 120/240 V secondary voltage systems having both NRCan (C802.2) and DOE (10 CFR 431, Subpart K) energy efficiency certification and compliance. UL and cUL listed to UL 1561 and CSA C22.2 No.47. Qualified to the seismic requirements of IEEE-693-2005 and the IBC-2021 and CBC 2022. The 9T33 transformers are also UL Energy Verified.
ABB - Electrification

9T33A2673

UPC: 783173365557


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Specification Sheet

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Overview

ABB’s 9T33 series single-phase, low-voltage dry-type transformers provide reliable power conversion for balanced 3-wire 120/240V secondary systems. Designed for commercial, industrial, and institutional applications, these transformers meet stringent energy efficiency standards, including NRCan (C802.2) and DOE (10 CFR 431, Subpart K), ensuring reduced energy consumption and lower operational costs. The 9T33 series is UL and cUL listed to UL 1561 and CSA C22.2 No.47, providing verified electrical safety and compliance with North American standards. Key specifications include a 60Hz frequency, input voltages ranging from 120x240V to 600V, and output voltages of 120/240V. Available in multiple kVA ratings (0.25 to 10 kVA), these transformers feature adjustable voltage taps for precise system matching. For example, the 1 kVA model (9T51B0190) weighs 30 lbs with a frame size of 12275, while the 10 kVA model (9T21B1048G02) weighs 198 lbs with a frame size of 19400. All models are qualified to seismic standards (IEEE-693-2005, IBC-2021, CBC 2022), making them ideal for critical infrastructure and high-risk environments. The dry-type construction eliminates the need for liquid cooling, reducing maintenance and environmental risks associated with oil-filled transformers. UL Energy Verified, these transformers provide confirmed efficiency ratings, ensuring long-term performance and cost savings. Whether for lighting systems, HVAC, or sensitive electronic equipment, the 9T33 series offers a dependable, code-compliant solution for modern power distribution needs. Choose ABB 9T33 for efficient, compliant, and durable power conversion.
  • UL and cUL listed to UL 1561 and CSA C22.2 No.47
  • Meets NRCan (C802.2) and DOE (10 CFR 431, Subpart K) energy efficiency standards
  • Available in 0.25 to 10 kVA ratings with input voltages from 120x240V to 600V
  • Qualified to seismic standards (IEEE-693-2005, IBC-2021, CBC 2022)
  • Dry-type construction eliminates liquid cooling, reducing maintenance and environmental risks

Specifications

Efficiency
DOE/NRC
Frequency Rating
60 HZ
Frequency Rating, Maximum
60 Hz
Frequency Rating, Minimum
60 Hz
Insulation
IS-19C
KVA Rating
50 KVA
Phase
1
Primary Voltage
240x480 V
Secondary Voltage
120/240 VAC
Series
9T33
Standard
Yes
Temperature Rating
40 °C
Temperature Rating, Maximum
104 F
Temperature Rating, Maximum
40 C
Temperature Rating, Minimum
104 F
Temperature Rating, Minimum
40 C
Voltage Rating
120/240 V
Package Dimensions (L x W x H)
24 IN x 31.8 IN x 35.7 IN
Package Dimensions (L x W x H)
60.96 cm x 80.772 cm x 90.678 cm
Package Weight (Imperial)
500.000 L
Package Weight (Metric)
226.800 kg
A - 15.0 kV bushing

015J0400AN

A - 15.0 kV bushing
O Plus C - 34.5 kV bushing

034Z3000AW

O Plus C - 34.5 kV bushing

Frequently Asked Questions

Are the 9T33 transformers suitable for seismic zones?

Yes, the 9T33 series meets seismic requirements per IEEE-693-2005, IBC-2021, and CBC 2022 standards.

What is the frequency rating of the 9T33 transformers?

All 9T33 models operate at a frequency of 60Hz.

What is the output voltage for all 9T33 models?

All 9T33 models provide a secondary output voltage of 120/240V.

What input voltages are compatible with the 9T33 series?

The 9T33 series supports input voltages of 120x240V, 277V, 480V, and 600V, depending on the model. Consult the catalog for specific configurations.

What certifications does the 9T33 series hold?

The 9T33 series is UL and cUL listed, NRCan and DOE energy efficiency certified, and UL Energy Verified.

What is the weight range for the 9T33 transformers?

Weights range from 10 lbs (0.25 kVA model) to 198 lbs (10 kVA model), with frame sizes varying accordingly.

Do the 9T33 transformers have adjustable voltage taps?

Yes, most models include voltage taps (e.g., -2: 5.1% or +2, -2: 2.5%) for system compatibility.

Are the 9T33 transformers suitable for outdoor use?

The 9T33 series is designed for indoor use. For outdoor applications, additional environmental protection is required.

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