Overview
The General Electric 9T51B109 is a .750KVA dry type transformer rated for industrial control and general-purpose applications. Model HTO1AH862A, Type QB designation, provides robust step-down voltage conversion for control circuits, signaling systems, and auxiliary power requirements in factory automation and industrial settings.
Key Features
- 0.750 KVA single-phase power capacity
- Dry type construction for safe indoor installation
- Type QB industrial control transformer design
- Class 180 insulation system with 40°C ambient temperature rating
- 60 Hz frequency rated, standard North American industrial power
- Lightweight, compact form factor suitable for control panels and switchboards
Technical Specifications
- Primary Voltage: 120/240V, single-phase (configurable winding)
- Secondary Voltage: 12/24V (configurable winding)
- Power Rating: 0.750 KVA
- Frequency: 60 Hz
- Type: Type QB dry type
- Insulation Class: 180 (Class B)
- Temperature Rise: 100°C at rated load
- Ambient Temperature: 40°C
- Phase: Single-phase
- Application: Industrial control, buck-boost, auxiliary power
Typical Applications
The General Electric 9T51B109 is ideal for:
- Control circuit power supply in industrial machinery and production equipment
- Voltage step-down for 24 VDC control systems from standard 120V or 240V plant power
- Buck-boost transformer applications requiring secondary voltage regulation
- Auxiliary power distribution in control panels and motor control centers
- General-purpose voltage transformation in factory automation systems
- Replacement for aged or failed control transformers in legacy equipment
Compatibility & Replacements
Compatible With
- Standard 120V or 240V single-phase industrial power supplies
- Control panel and motor control center (MCC) installations
- 24 VDC control logic systems and PLC auxiliary voltage inputs
- Relay and solenoid coil power applications rated for 12/24 VDC
- Industrial machinery with modular transformer mounting
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 9T51B109 replaces equivalent 0.750KVA Type QB single-phase transformers from this product family. Similar models include 9T51B105 and other 0.750KVA GE control transformer variants; however, always confirm terminal configurations and mounting specifications with the original equipment documentation.
Works With
- Standard electrical conduit, cable tray, and panel-mount installations
- Single-phase 60 Hz electrical distribution systems in North America
- Enclosure-mounted or wall-mounted industrial control architectures
- Legacy and modern PLC auxiliary voltage supplies
- NEMA-compliant industrial automation control systems
