Model 4480-T

Regular price $468.00

Model 4480-T Two-Hand Machine Control Anti-Tiedown Monitor

Nolatron’s Model 4480 Switch Monitor provides two-hand control for presses, welders, molders, and various production machines. The 4480 also helps to comply with OSHA, which requires an operator to have both hands on start switches in order to begin a machine cycle. This minimizes the possibility of an operator having a hand in the work area when a machine cycle is started. If one or both switches are “tied-down”, the control will not allow a new machine cycle to begin.


Compatible with single pole hand sensing devices

Uses redundant positive guided relays

Meets the OSHA classification of “Control Reliability’

Uses a detachable terminal strip for easy installation and removal

The 4480 series can replace Nolatron’s 4470 series with no modification to wiring.


As each start switch is closed, it will be delayed for .075 seconds* before an internal relay is energized. If both start switches are closed within a time of .5 seconds, the output contact will close and the load will energize. The output contact will remain closed for .5 seconds or until one or both start switches are opened. Both switches must be released before another cycle is initiated.


Physical Dimensions

120mm x 100mm x 50mm (4.7″ x 3.7″ x 2.0″)

Power Requirements

115 VAC, 50/60 Hz @ .1 A 230 VAC, 50/60 Hz @ .05A

Power Line Monitor

Resets if supply drops below 90V RMS (115V application), 180V RMS (230V application) for more than 15ms.

Output Load Rating

8 Amps (Switching)6 Amps (Continuous)

Output Life

10 million mechanical operations (minimum)

Hand Switch Delay

0.05 to 0.15 seconds (factory set at 0.075 seconds)

Switches must be activated within:

0 to 0.7 seconds (factory set at 0.5 seconds)

Output Pulse Time

.2 to 1.0 second ± 20%, factory set at .5 seconds

Delay on Power-up

5 seconds (approximate)

Temperature Range

Up to 60°C (140°F)


Made in U.S.A.


Nolatron 4480 Brochure

Nolatron 4480-T Application Notes