APL111-23486-2 Airpax Corporation, APL111-23486-2 Datasheet - Page 6

• Manufacturer Part Number: APL111-23486-2
• Description: Circuit Breaker, Magnetic Circuit Breakers
• Manufacturer: Airpax Corporation

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Series Trip
The most popular configuration for magnetic protectors is the
series trip where the sensing coil and contacts are in series with
the load being protected. The handle position conveniently indi-
cates circuit status. In addition to providing conventional over-
current protection, it’s simultaneously used as an on-off switch.
Auxiliary Switch
(Applies to Series Trip Only)
This is furnished as an integral part of a series pole in single or
multi-pole assemblies. Isolated electrically from the protector’s
circuit, the switch works in unison with the power contacts
and provides indication at a remote location of the protector’s
on-off status.
main breaker contacts, and will open regardless of whether the
breaker contacts are opened manually or electrically. For auxiliary
switch ratings below 6Vac or 5Vdc, an auxiliary switch with gold
contacts is available. Gold contacts are not recommended for
load current above 100 milliamps.
only in the event of an electrical trip of the circuit breaker.
Shunt Trip
The shunt trip is designed for controlling two separate loads
with one assembly. The control is established by providing
overload protection for the critical load. When the current
through this load becomes excessive and reaches the trip point,
the protector will open and remove power from both loads
simultaneously. The total current rating of both loads must
not exceed the maximum contact rating.
APL/UPL, 205/295 Configurations
APL/UPL, 205/295 CONFIGURATIONS
Auxiliary switch contacts actuate simultaneously with the
The contacts on our optional RS auxiliary switch will open
Relay Trip
This permits the overload sensing coil to be placed in a circuit
which is electrically isolated from the trip contacts. The coil
may be actuated by sensors monitoring pressure, flow, tempera-
ture, speed, etc. Other typical applications include crowbar,
interlock and emergency/rapid shutdown circuitry. Trip may
be accomplished by voltage or current, which must be removed
immediately upon tripping.
Dual Coil
Dual coil protectors provide remote shut down option and
normal overcurrent protection in the confines of a single
breaker pole. This construction saves space by eliminating the
need for an additional pole for the voltage trip function.
Voltage Trip
Sometimes called “dump circuits” or “panic trip circuits,” these
units make it possible to open main power contacts with lower
power inputs from one or more sources. This configuration
is becoming increasingly more important for sensitive circuitry
and denser packaging in automation systems. Available in
series, shunt, relay or dual coil configurations.