TPR temperature switches provide fixed-setpoint freeze protection with a remote bulb and capillary. The switch operates at 40°F (4.4°C) on falling temperature, with an approximate 10°F (5.6°C) differential.

A black polycarbonate NEMA 4X enclosure protects the SPDT switching mechanism. Two catalogue part numbers offer different capillary arrangements. Contact Mod-Tronic to confirm the required installation and capillary length.

TPR Temperature Switches — Catalogue Temperature Switches — Supplemental Guide

Select & Configure Model

Base Model #	Sensing / Layout	Temperature Range / Setpoint	Outputs	Probe / Connection	Availability	Configure Part #

TPR-L1N-3X-Q10	Remote bulb, fixed setpoint	40°F (4.4°C), falling	SPDT, 22 A at 125/250/480 VAC	3 ft per ordering chart; confirm length	Inquire	QTY Add to Cart
TPR-L1N-10X-Q10	Remote bulb, fixed setpoint	40°F (4.4°C), falling	SPDT, 22 A at 125/250/480 VAC	10 ft capillary	Inquire	QTY Add to Cart

Temperature Range:

Fixed 40°F (4.4°C) setpoint on falling temperature.

Control action:

SPDT mechanical switch; approximate differential 10°F (5.6°C).

Ambient Temperature :

-30 to 140°F (-34 to 60°C).

Material:

Tin-plated copper bulb and capillary; silicone fill.

Enclosure Rating:

NEMA 4X.

Conduit Connection:

1-1/8 in (28 mm) hole for a 3/4 NPT conduit hub.

Length:

Bulb 3-1/8 in (79 mm); capillary per model. Confirm shorter capillary and bulb diameter.

Net Weight:

Approximately 1.1 lb (0.5 kg).

Accuracy:

±4°F setpoint accuracy.

Operating Temperature:

Media -40 to 160°F (-40 to 71°C).

Electrical Rating:

22 A at 125/250/480 VAC.

Housing:

Black polycarbonate.

Pressure Limit:

300 psi without a thermowell.

Electrical Connections:

12 in, 14 AWG stranded leads; NC blue, common purple, NO red.

Approvals:

UL E56247; CSA LR58658; CE.

Ordering notes

The current ordering chart identifies the -3X model with a 3 ft capillary and the -10X model with a 10 ft capillary. The same sheet also describes the shorter capillary as 30 in in its specifications. Confirm the required shorter length before ordering. The two complete part numbers below do not require a configurator.

Bulb diameter is omitted here because the catalogue gives inconsistent inch and metric values. Ask Mod-Tronic to verify mounting dimensions for your installation. Availability is by inquiry.