APL/UPL Series

Hydraulic Magnetic Circuit Protectors

INTRODUCTION

IMPORTANT NOTICE:

The APL/UPL is a legacy

product and no new design-in orders are being

accepted. We are also discontinuing the 205 series

(APL with dust proof enclosure). If the specifications

for any of these products are necessary for your

system, SensataTechnologies recommends utilizing

the Airpax™ IAL series.

The APL/UPL magnetic circuit protector provides reliable,

low-cost power switching, circuit protection and circuit

control. The handle opens and closes a circuit, under normal

load conditions, similar to an ON-OFF switch. Upon overload,

the internal mechanism trips, opens the contacts and forcibly

returns the handle to the OFF position. Since the protector is

“trip free,” the internal contacts will not remain closed in the

presence of an overload, even though the handle is held in the

ON position.

The APL/UPL line offers many configurations including series,

shunt and relay with a choice of delays and ratings. APL/UPL

multi-pole assemblies are available with a mix of current ratings,

delays and internal circuit configurations.

While designed for industrial, military and information processing

applications, the APL is suitable for use in any situation where

precision operation is required. Most versions of the APL

family are recognized by UL per UL STD. 1077 as supplementary

protectors and certified by CSA per CSA STD. C22.2–No. 235

as supplementary protectors and are designated with the UPL

prefix.

.750 MAX.

[19.05]

1.438

[36.53]

.402

[10.21]

.220

[5.59]

6-32 THD. (M3 ISO. THD. OPTIONAL)

.187 [4.75] DEEP (TWO PLACES)

2.060 ± .010

[52.32 ± 0.25]

ON

ON

.150

[3.81]

2.530 MAX.

[64.26]

MAX.

2.020

[51.31]

.675

[17.14]

Note: Tolerance ± .015 [.38]

unless noted. Dimensions in

brackets [ ] are millimeters.

APL/UPL

Single Pole Toggle