ABB - Electrification Signature Partner Distributor
ABB - Electrification 9T51B0127 - ABB's Buck-boost transformers are small, single phase, dry type distribution transformers designed and shipped as insulating/isolating transformers. They have a dual voltage primary and a dual voltage secondary. These transformers can be connected for a wide range of voltage combinations. The most common use is to buck (lower) or boost (raise) the supply voltage a small amount, usually 5 to 27%. Buck boost transformers comply with NEC Article 210-9, Exception 1, when field connected as an autotransformer.
ABB - Electrification

9T51B0127

UPC: 783173008768


Documents & Media
Specification Sheet

Contact for Pricing

Overview

The ABB 9T51B0127 is a single-phase, dry-type buck-boost transformer designed for precise voltage adjustment in electrical systems. Manufactured by ABB - Electrification, it ships as an insulating/isolating transformer, providing inherent safety and flexibility. It features dual voltage primary windings (240 x 480 Volts) and dual voltage secondary windings (120 / 240 Volts), enabling voltage adjustment from 5% to 27% for bucking or boosting. When configured as an autotransformer in the field, it complies with NEC Article 210-9, Exception 1. Specifications include a 105°C insulation system and a 55°C temperature rise, ensuring reliable performance under demanding conditions. It holds UL and CSA certifications. The dry-type construction eliminates oil, simplifying maintenance and reducing environmental concerns. The compact footprint makes it suitable for applications requiring fine-tuned voltage regulation. Series models include frame sizes YX172 (25 kVA) and XV173 (50 kVA). Specific models: - 9T33C2671G13 and 9T33C2671G15: 25 kVA, primary 240 x 480 Volts, secondary 120 / 240 Volts, taps (+2,-4; 2.5%) and (+2,-4; 2.3%) respectively. - 9T33C2673G13 and 9T33C2673G15: 50 kVA, primary 240 x 480 Volts, secondary 120 / 240 Volts, taps (+2,-4; 2.5%) and (+2,-4; 2.7%) respectively. All models include primary and secondary fusing for protection: two primary fuses and one secondary fuse with holders and clips. Common applications include lighting systems, motors, and other electrical equipment requiring precise voltage control. The dual voltage windings support flexible installation options. The design allows for easy field configuration, making it versatile for residential and commercial use. Compliance with NEC standards ensures safe and efficient operation as an autotransformer.
  • Single-phase, dry-type construction for safety and reduced maintenance.
  • Dual voltage primary (240 x 480V) and secondary (120 / 240V) for versatile configurations.
  • Enables voltage bucking or boosting by 5% to 27% for precise power adjustment.
  • UL and CSA certified, with 105°C insulation system and 55°C temperature rise.
  • Field-configurable as an autotransformer, complying with NEC Article 210-9, Exception 1.
  • UL and CSA certified for safety and compliance

Specifications

Connection Type
Field Connectable (Autotransformer)
Enclosure
NEMA 3R
Frequency Rating
60 HZ
Height
7.38 in
Input Voltage
120x240
Insulation
IS-12
Material
Dry type
Output Voltage
16/32
Phase
1
Poles
Single Phase
Series
Buck-Boost
Series
Buck-Boost Transformers
Size
Compact
Special Features
ABB's Buck-boost transformers are small, single phase, dry type distribution transformers designed and shipped as insulating/isolating transformers. They have a dual voltage primary and a dual voltage secondary. These transformers can be connected for a wide range of voltage combinations. The most common use is to buck (lower) or boost (raise) the supply voltage a small amount, usually 5 to 27%. Buck boost transformers comply with NEC Article 210-9, Exception 1, when field connected as an autotransformer.
Standard
Yes
Temperature Rating
40 °C
Wattage
0.25 KVA
Width
6.12 in
Package Dimensions (L x W x H)
4.25 IN x 6.12 IN x 7.38 IN
Package Dimensions (L x W x H)
10.795 cm x 15.5448 cm x 18.7452 cm
Package Weight (Imperial)
10.000 L
Package Weight (Metric)
4.536 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 is the frequency rating?

The frequency rating for this transformer is 60 Hz.

What type of transformer is the 9T51B0127?

The 9T51B0127 is a small, single-phase, dry-type distribution transformer designed as an insulating/isolating transformer.

What is the KVA rating of the 9T51B0127?

The KVA rating for this transformer is 7.5 KVA.

What material is the coil made of?

The coil material for this transformer is copper (CU).

What is the temperature rise rating?

The temperature rise rating is 150 degrees Celsius.

What is the insulation system class?

The insulation system (IS) class is 180 degrees Celsius.

What is the enclosure type?

The enclosure type is NEMA 3R.

Is this transformer UL listed?

Yes, this transformer is UL listed.

Is this transformer cUL listed?

Yes, this transformer is cUL listed.

What is the main application for this transformer?

Its most common use is to buck (lower) or boost (raise) the supply voltage by a small amount, typically up to 10%.

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.