Overview
The Acme Electric TB-81214 is a 350VA, single-phase, dry-type industrial control transformer engineered for step-down voltage conversion in industrial machinery and automation systems. With a 240/480V primary input and 120V secondary output, this transformer provides stable, regulated power for control circuits and instrumentation at standard 50/60Hz frequencies. Open core and coil construction delivers reliable performance in manufacturing, HVAC, and electrical panel applications where control-level voltage transformation is required.
Key Features
- 350VA power rating suitable for medium-duty industrial control applications
- Single-phase, 50/60Hz operation compatible with standard industrial power systems
- Open core and coil design allows for flexible mounting and thermal management
- Wire-wound construction ensures durability and consistent transformer performance
- 80°C temperature rise rating for reliable continuous duty operation
- Dry-type transformer—no oil cooling required; safe for indoor installation
Technical Specifications
The transformer delivers consistent performance across a wide voltage range and is suitable for integration into industrial control panels and machinery.
- Primary Voltage: 240/480V (also available in 220/440V, 230/460V configurations)
- Secondary Voltage: 120V (110/115/120V series options)
- Power Rating: 350VA
- Phase: Single Phase (1-ph)
- Frequency: 50/60Hz
- Temperature Rise: 80°C at full load
- Transformer Type: Dry-Type, Open Core and Coil
- Winding: Wire-Wound
- Weight: 13.5 lbs
Typical Applications
The TB-81214 is commonly used in:
- Industrial control panel power supplies and circuit protection
- HVAC and mechanical equipment starter circuits
- Factory automation and machine tool control systems
- Instrumentation and indicator light circuits
- General-purpose industrial machinery requiring control-level voltage step-down
- Panel-mounted voltage conversion for legacy and modern equipment
Compatibility & Replacements
Compatible With
- Standard industrial 3-phase 480V AC power systems (via single-phase tap)
- 240V and 480V single-phase industrial power
- NEMA enclosure and control panel installations
- VFD and soft-starter control circuits
- Legacy industrial machinery and modern electrical panels
Replaces / Drop-In Replacement For
- Acme Electric TA-2-81214 (direct equivalent variant)
- Acme Electric TA-1-81214 (230/460V primary variant)
- Other Acme TB Series transformers in the 350VA control category
- Generic 350VA 1-phase control transformers with matching voltage configuration
Works With
- NEMA/IEC industrial control systems and electrical panels
- VFD and servo drive control circuits
- PLC and industrial automation networks
- Standard 50/60Hz industrial power distribution
- Dry-type transformer standards (suitable for indoor/outdoor installations)
