ABB - Electrification Signature Partner Distributor
ABB - Electrification 9T51B0157G03 - ABB's QB single phase transformers feature encapsulated core and coils in a NEMA 3R nonventilated weatherproof enclosure. Knock outs provided on back and bottom. Mounting holes on side for easy access. Wiring compartment includes ground stud.
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ABB - Electrification

9T51B0157G03

UPC: 783173036693


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Specification Sheet

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Overview

ABB's QB single-phase encapsulated transformers (SKU: 9T51B0157G03) are engineered for general purpose power distribution in demanding industrial and outdoor environments. These transformers feature a robust, non-ventilated NEMA 3R weatherproof enclosure, providing reliable protection against moisture, dust, and contaminants. The encapsulated core and coils further enhance durability and longevity in harsh conditions. Engineered for flexible installation, the QB series includes knockout holes on the back and bottom for convenient conduit entry, accommodating various wiring configurations. Mounting holes are strategically placed on the side for easy access and secure mounting. The integrated wiring compartment is equipped with a ground stud for enhanced electrical safety and compliance. This specific model, part of ABB's encapsulated type QB line, offers a dependable solution for single-phase power needs. The NEMA 3R enclosure ensures suitability for outdoor applications where protection from rain and sleet is essential. While other ABB ENCX series models offer NEMA 12/3R enclosures with pilot device knockout holes and space for control power transformers (e.g., ENCX2W117C6, ENCX1W114C2), this unit focuses on core functionality and weatherproof protection. ABB, a recognized leader in electrification, provides transformers built with precision and reliability for consistent performance in commercial buildings, manufacturing facilities, and utility applications. Ensure proper selection based on specific voltage and kVA requirements for your application. Country of Origin: US. UNSPSC Code: 39121027.
  • Encapsulated core and coils for enhanced durability
  • NEMA 3R non-ventilated weatherproof enclosure
  • Knockouts provided on back and bottom for conduit entry
  • Side mounting holes for easy access
  • Wiring compartment includes ground stud for safety

Specifications

Enclosure
NEMA 3R
Frequency Rating
60 HZ
Frequency Rating, Maximum
60 Hz
Frequency Rating, Minimum
60 Hz
Height
11.12 in
Input Voltage
208
Insulation
IS-12
Material
Encapsulated Core and Coils
Mounting Type
Side-mounted holes
NEMA Rating
NEMA 3R
Output Voltage
120/240
Phase
1
Series
QB
Special Features
ABB's QB single phase transformers feature encapsulated core and coils in a NEMA 3R nonventilated weatherproof enclosure. Knock outs provided on back and bottom. Mounting holes on side for easy access. Wiring compartment includes ground stud.
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
Wattage
3 KVA
Width
9.38 in
Package Dimensions (L x W x H)
6.72 IN x 9.38 IN x 11.12 IN
Package Dimensions (L x W x H)
17.0688 cm x 23.8252 cm x 28.2448 cm
Package Weight (Imperial)
55.000 L
Package Weight (Metric)
24.948 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

What type of transformer is the 9T51B0157G03?

The ABB 9T51B0157G03 is a single-phase, dry-type, encapsulated transformer.

What enclosure type does this transformer have?

It features a NEMA 3R non-ventilated, weatherproof enclosure.

What materials are the coils made of?

The coils are made of copper (CU).

What is the operating frequency for this transformer?

The transformer operates at a frequency of 60 Hz.

Does this transformer have knockouts for wiring?

Yes, knockouts are provided on the back and bottom for wiring access.

Are there mounting holes for installation?

Yes, mounting holes are located on the side for easy access.

What are the available power ratings for this transformer series?

This series of transformers is available in 15 kVA, 25 kVA, 37.5 kVA, and 50 kVA ratings.

What is the temperature rise rating for this transformer?

The transformer has a temperature rise rating of 150 degrees Celsius.

What is the ambient temperature rating?

The ambient temperature rating is 40 degrees Celsius.

What is the temperature class of the transformer?

The temperature class is 220 degrees Celsius.

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.

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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.

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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.

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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.

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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.

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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.

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