NBK Parts 20606 Transformer

The NBK Parts 20606 is a 75VA HVAC control transformer designed to step multiple primary voltages down to 24V for heating, air conditioning, and refrigeration control circuits. This 75VA HVAC transformer accepts 120V, 208V, 240V, or 480V primary power, making it suitable for service applications where a versatile multi-tap replacement is required.

The 24V secondary supplies low-voltage power for compatible thermostats, contactors, relays, control boards, and other HVAC controls. The NBK 20606 transformer features foot mounting, 50/60 Hz operation, and a manual-reset protection configuration.

NBK identifies this unit as equivalent to MARS 50321 and Packard PF52475, providing contractors with a practical HVAC control transformer replacement option.

Before installation, verify the equipment input voltage, 24V secondary requirement, 75VA capacity, mounting arrangement, and wiring configuration. This 24V control transformer should be installed using the correct primary voltage tap specified for the equipment and electrical supply.

Key Benefits

• 75VA capacity for compatible HVAC control circuits
• Multi-tap 120/208/240/480V primary input
• 24V secondary output for low-voltage HVAC controls
• 50/60 Hz operating frequency
• Foot-mount configuration for service replacement applications
• Manual-reset protection configuration
• Equivalent to MARS 50321 and Packard PF52475

Common Questions

What voltage does the NBK 20606 transformer output?
The NBK 20606 provides a 24V secondary output from compatible 120V, 208V, 240V, or 480V primary inputs.

What is the VA rating of the NBK 20606?
The transformer is rated at 75VA for compatible HVAC control applications.

What transformers does the NBK 20606 replace?
NBK identifies the 20606 as equivalent to MARS 50321 and Packard PF52475. Always verify voltage, VA rating, mounting, and wiring requirements before replacement.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

20606 is the cross for 621783R