Magnetic Circuit Protectors
IPA/CPA Series
Introduction
Poles
PC Board Mount
Configurations
Operating Characteristics
Delay Curves
Specifications
Decision Tables
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IPA/CPA Series
Hydraulic Magnetic Circuit Protectors
INTRODUCTION
The Airpax™ IPA/CPA hydraulic-magnetic circuit protectors
provide low-cost power switching, reliable circuit protection
and accurate circuit control for equipment in the international
marketplace.
IPA models meet IEC spacing requirements that are mandatory
for equipment which must comply with IEC specifications 601
and 950 and VDE specifications 0804 and 0805. In addition, they
are UL Recognized as supplementary protectors per UL STD.
1077, CSA Certified as supplementary protectors per CSA C 22.2-
No. 235, TUV Approved to VDE 0642 (EN60934), CCC Approved
(pending) and CE Compliant.
Designed using the latest in sensitive hydraulic magnetic
technology, the IPA line adapts itself to many applications and
environments. They’re ideal for data processing and business
machines, medical instrumentation, broadcast equipment,
vending and amusement machines, military applications
and wherever precision operation is required. Temperature
differences which affect fuses and other thermal devices are not
a concern.
One important feature of this protector line is a “trip free” action,
which means the circuit will trip in the presence of an overload
even though the handle is held in the ON position. The delay
mechanism senses the fault and the contacts open.
The IPA is available in configurations including series and series
with auxiliary switch, with a choice of delays and ratings in either
DC, 50/60Hz or 400Hz versions. Single or multi-pole versions
are available, with a variety of pole arrangements to meet your
specifications.
83
IPA Series - Introduction
http://airpax.sensata.com
SINGLE POLE (ONE HANDLE)
.635
[16.13]
LINE
.535
[13.59]
60
1.654
[42.01]
O
N
O
F
F
Mounting Detail
.551
[14.00]
1.260
[32.00]
1.260
[32.00]
.787
[19.99]
2X .157
[3.99]
.640 MAX.
[16.26]
.982
[24.94]
1.732
[43.99]
1.988 MAX.
[50.50]
.098
[2.49]
2X 6-32 THREAD
.165 MAX.
[4.19]
.228
[5.79]
Notes:
1. Tolerance ± .015 [.38] unless noted. Dimensions in brackets [ ] are millimeters.
2. Main circuit breaker terminals are stationary male push-on type: .248 [6.30]
wide x .031 [.787] thick x .474 [12.00] long, or screw type: M4 x .354 [8.99]
wide x .031 [.787] thick x .474 [12.00] long.
IPA Series - Poles
IPA Series (PCB Mount)
84
MULTI-POLE CIRCUIT PROTECTORS
Two Pole Protectors
An assembly consisting of two single pole units, having their trip
mechanisms internally coupled and with a single toggle handle,
forms the IPA-11 with quick-connect D.I.N.-style terminals.
Individual poles may differ in ratings, delays and internal
connections. An auxiliary switch may be included in either or both
poles, allowing you to mix SELV and hazardous voltages. Rugged
screw-type terminals can be provided, in which case the
designation would be IPA-66. The IPAH offers a toggle handle for
each pole.
Three Pole Protectors
The three pole construction consists of three single pole units
assembled with an internal mechanical interlock which actuates
all units simultaneously. A single toggle handle operates all three
poles for quick and convenient control, or if preferred, a handle
per pole is available. The individual poles need not have identical
characteristics and any series trip pole may have an auxiliary
switch. If screw-type terminals are required, the breaker
designation will be IPA-666 for a three pole version.
Breaker poles are numbered consecutively when viewed from the
terminal side, with the ON position up, starting with Pole #1 on
the left side and proceeding to the right.
Handles
The IPAH two and three pole models are available with a handle
per pole.
IPA/CPA
Two Pole Protectors
(one handle)
Three Pole Protectors
(one handle)
O
N
O
F
F
O
N
O
F
F
1.295 MAX.
[32.89]
1.935 MAX.
[49.15]
(Optional: Handle may be
located in Pole 1 instead of
Pole 2)
Mounting Details
Two Pole
0.551
Three Pole
0.551
.630
[16.00]
.630
[16.00]
Note: Tolerance ± .015 [.38]
unless noted. Dimensions in
Brackets [ ] are millimeters.
.630
[16.00]
85
IPA Series - Poles
http://airpax.sensata.com
IPA/CPA
Two Pole Protectors
(one handle)
Three Pole Protectors
(one handle)
O
N
O
F
F
O
N
O
F
F
1.295 MAX.
[32.89]
1.935 MAX.
[49.15]
(Optional: Handle may be
located in Pole 1 instead of
Pole 2)
Mounting Details
Two Pole
0.551
Three Pole
0.551
Note: Tolerance ± .015 [.38]
unless noted. Dimensions in
Brackets [ ] are millimeters.
.630
[16.00]
.630
[16.00]
.630
[16.00]
IPA Series - Poles
IPA Series (PCB Mount)
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