Hammond Power 2909B4. - Motor Starting Autotransformers 2A-series, 2 Coil, 240V, 400 HP
Hammond Power

2909B4.

UPC: 803423000134


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Overview

The Hammond Power 2909B4 Motor Starting Autotransformer (2A-series) is a 2-coil device rated for 240V and 400 HP, engineered to reduce voltage stress during motor startup. This autotransformer limits inrush current to protect motors from mechanical and electrical stress during acceleration, extending equipment lifespan. The 2-coil configuration supports smooth motor starting, minimizing mechanical wear in heavy-duty industrial environments. Ideal for applications such as pumps, compressors, and conveyor systems, the 2909B4 ensures reliable performance in harsh operating conditions. Its compact design and durable construction reduce energy consumption during startup cycles while maintaining consistent performance for medium to large horsepower motors. Part of Hammond Power’s 2A-series, this autotransformer delivers controlled voltage reduction for efficient motor acceleration.
  • 2-coil autotransformer rated for 240V and 400 HP
  • Reduces inrush current to protect motors during startup
  • Compact design suitable for harsh industrial environments
  • Supports smooth motor acceleration in pumps, compressors, and conveyors
  • Part of Hammond Power’s 2A-series for consistent performance

Specifications

Application
Motor loads such as pumps, compressors, conveyers, and fans.
Connection
Copper Pads
Control
Supplied by others
Cooling
Convection Air Cooled
Enclosure
Core and Coil
Frequency Rating
60 HZ
Input Voltage
240 V
Insulation
220 Deg C Class
Phase
3
Power Factor
Supplied by others
Special Features
2 Coil MSAT's are integrated with controls for reduced votlage starts, optional thermal switches are available.
Standard
CSA, UL
Type
Autotransformer > Motor Starting > 2 Coil
Wattage
400 HP
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2909B3.

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2909B5.

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3009B5.

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3009B3.

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Motor Starting Autotransformers 3A-series, 3 Coil, 240V, 250 HP

3009B2.5

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Motor Starting Autotransformers 2A-series, 2 Coil, 240V, 250 HP

2909B2.5

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Motor Starting Autotransformers 2A-series, 2 Coil, 240V, 600 HP

2909B6.

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Motor Starting Autotransformers 3A-series, 3 Coil, 240V, 200 HP

3009B2.

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Motor Starting Autotransformers 2A-series, 2 Coil, 240V, 200HP

2909B2.

Motor Starting Autotransformers 2A-series, 2 Coil, 240V, 200HP
Motor Starting Autotransformers 3A-series, 3 Coil, 240V, 600 HP

3009B6.

Motor Starting Autotransformers 3A-series, 3 Coil, 240V, 600 HP
Motor Starting Autotransformers 2A-series, 2 Coil, 480V, 400 HP

2909C4.

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Frequently Asked Questions about Hammond Power

What certifications and standards do Hammond Power products comply with?

Hammond Power products are certified to UL (Underwriters Laboratories) and CSA (Canadian Standards Association) standards in North America. Our products meet rigorous safety and performance requirements, with many items classified as UL Listed Products or Recognized Components. We also comply with international certifications including China Compulsory Certification (CCC), C-Tick for Australian EMC requirements, and ANCE for Mexico.

What is Hammond Power's warranty policy?

Hammond Power provides a standard one-year warranty on all products, covering defects in workmanship and materials. Products will be repaired or replaced free of charge if found defective upon factory inspection. The warranty does not cover damage from improper handling, incorrect application, or faulty installation.

What industries and applications are Hammond Power products used for?

Hammond Power products are engineered for critical industrial and commercial applications across multiple sectors, including petrochemical, mining, construction, renewable energy, e-mobility, power storage, and microgrids. Their comprehensive product range of dry-type transformers, power quality solutions, and magnetic components enables electrical distribution and electrification in diverse industrial environments worldwide.

What are the main product lines offered by Hammond Power?

Hammond Power Solutions offers a comprehensive range of dry-type and liquid-filled transformers for industrial and commercial applications. Their primary product lines include power transformers for renewable energy, e-mobility, data centers, microgrids, and industrial settings. The company provides both standard and custom-designed transformer solutions that are critical to electrical distribution networks across multiple industries.

What are the key features of Hammond Power products?

Hammond Power products feature advanced dry-type and liquid-filled transformers engineered for diverse industrial applications, with capabilities spanning renewable energy, e-mobility, data centers, microgrids, and industrial/commercial sectors. Key features include high-performance electrical steel laminations, windings available in copper or aluminum, advanced insulation systems (VPI or Cast Resin), Basic Impulse Level ranges from 10 kV to 250 kV, and custom design capabilities with over 3,000 unique transformer designs engineered annually.

What environmental ratings do Hammond Power products have?

Hammond Power offers industrial enclosures with comprehensive environmental ratings, including UL/cUL 508A ratings of Type 1, 2, 3, 4, 4X, 12, and 13. Their products meet IEC 60529 IP66 standards, providing robust protection against dust, water ingress, and harsh environmental conditions. Specific ratings vary by product series, with options ranging from indoor Type 1 enclosures to outdoor-rated Type 4X enclosures suitable for challenging industrial environments.

What technical support does Hammond Power offer?

Hammond Power Solutions provides comprehensive technical support through multiple channels. Customers can access technical resources via phone support in Canada, the United States, Mexico, and internationally, with toll-free numbers and regional contact points. Their technical team offers personalized assistance for custom design inquiries, helping customers find standard transformer and power solutions or develop specialized electrical products for various industrial applications.

What communication protocols do Hammond Power products support?

Hammond Power products support multiple industrial communication protocols, including Modbus RTU, PROFIBUS DP, PROFINET, EtherNet/IP, and CANopen. These protocols enable flexible connectivity across industrial automation platforms, supporting various network topologies and high-speed data transmission for comprehensive industrial control and monitoring applications.

What accessories are available for Hammond Power products?

Hammond Power offers a comprehensive range of accessories for industrial electrical components, including HME Series handles with key locking and padlocking options, door stop kits, light kit mounting brackets, and standard hardware like mounting screws and washers. These accessories are designed to enhance functionality and installation flexibility across their product lines.

How are Hammond Power products typically installed?

Hammond Power transformers are typically chassis-mounted using precise mounting hole centers and dimensions specific to each product series. Installation involves selecting the appropriate primary voltage configuration, securing the transformer to a mounting surface using the specified mounting holes, and connecting terminals according to the product's schematic. Most Hammond Power transformers feature multiple terminal options like solder or quick-connect terminals, allowing flexible and straightforward installation in industrial control and power distribution applications.