209/219/229/249/279 Series
Magnetic Circuit Protectors
Introduction
249 Power Selector System
Multi-Pole
Configurations
Operating Characteristics
Delay Curves
Specifications
Decision Tables
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209/219/229/249/279
209/219/229 MAGNETIC CIRCUIT PROTECTORS
209/219/229/279 Series
Hydraulic Magnetic Circuit Protectors
Terminal Style
209 E-Frame circuit breakers may be specified with either
screw terminals, stud or solderless connectors.
A choice of front or back connected terminal styles is available.
The back connected terminal style is available with stud
terminals only. Front terminal style is available with either
screw terminals or solderless connectors.
Refer to Sixth Decision Table for front connected terminal
information.
Barriers for back connected terminal styles are supplied on
multi-pole units only. Line and load connections may be made
to either terminal and terminals will be identified as shown.
DIMENSION “A”
Number of Poles
1
2
3
4
5
6
Dimensions “A”
1.026 ± .010 [26.06 ± 3.30]
2.072 [52.63] Max
3.108 [78.94] Max
4.144 [105.26] Max
5.180 [131.57] Max
6.216 [157.89] Max
INTRODUCTION
The 209, E-Frame circuit breaker combines power switching with
accurate, reliable circuit protection in a compact single or multi-
pole unit. The unit is ideal for branch circuit applications such as
EDP, air conditioners, panel boards and lighting controls.
The 209 is actually a family of circuit breakers available in one
through six pole assemblies with a variety of configurations
and terminal styles to meet your application needs. First in this
family is the 209, a general purpose E-Frame circuit breaker
which complies with UL Standard 489. Other members of the
family include the 219, for manual controller applications,
which complies to UL Standard 508, the 229, for supplementary
protectors applications, which complies to UL Standard 1077,
and the 299, a Special Construction version.
Utilizing the hydraulic-magnetic principle, the 209 family adapts
itself to local applications and environments. Temperature
conditions, which affect fuses and other thermal devices, are
not a concern. The magnetic /ampere turn principle minimizes
nuisance tripping due to temperature variations.
Inrush currents, due to ferroresonant transformers, lamps
and capacitive filters, are now becoming more significant.
Recognizing the need for this type of protection, Airpax offers the
unique inertial delay which is standard for all 50/60Hz time delay
units, but may be deleted where inrush is not a problem. No extra
cost or special order is required.
The 209 family of circuit breakers withstands high pulses
without tripping or affecting normal delay curves. This
performance, however, does not derate or sacrifice protection.
Front Connected Solderless Connector
(Back Mounted)
A
.562
[14.27]
.530
[13.46]
.700
[17.78]
MAX.
2.610
[66.29]
.220
[5.59]
1.220
[30.99]
.125
[3.18]
.200
[5.08]
.485
[12.32]
+.015
-.005
+0.38
-0.13
2.156
[54.76]
2.250
[57.15]
2.750
[69.85]
5.800
[147.32]
4.844
[123.04]
35º
1.375
[34.92]
1.125
[28.58]
35º
4.750
[120.65]
2.375
[60.32]
2X 6-32 MTG. INSERT
.160 MIN. SCREW DEPTH
[4.06]
.310 MAX. SCREW DEPTH
[7.87]
3.0 MM ISO THD. OPTIONAL
.220
[5.59]
Back Connected Stud Terminal
(Front Mounted)
A
.700
[17.78]
MAX.
.220
[5.59]
2.610
[66.29]
3.550
[90.17]
2.156
[54.76]
2.750
[69.85]
2.250
[57.15]
+.015
-.005
+0.38
-0.13
5.125
[130.18]
1.375
[34.92]
1.125
[28.58]
3.550
[90.17]
4.750
[120.65]
2X 6-32 MTG. INSERT
.160 MIN. SCREW DEPTH
[4.06]
.310 MAX. SCREW DEPTH
[7.87]
3.0 MM ISO THD. OPTIONAL
Note: Tolerance ± .015 [.38] unless noted. Dimensions in brackets [ ] are millimeters.
0-50 AMPS
10-32 STUDS
.625 ±.062 [15.88 ±1.57] LONG
51-100 AMPS
1/4-20 STUDS
.750 ±.062 [19.05 ±1.57] LONG
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249 POWER SELECTOR BREAkER SySTEM
249 Master Drawing
The 249 Power Selector Breaker System combines
magnetic-hydraulic branch circuit overload protection
and a power system selector switch in one device.
The 249 is designed to allow selection of any one of
two, three or four independent power systems. This is
accomplished with fool-proof sliding-gate handle
covers. The number of sliding covers is one less than
the number of power systems. With this arrangement,
it is impossible to switch “ON” more than one power
system at a time.
Since the 249 Power Selector Breaker System is listed
as a Branch Circuit Breaker per UL 489 and power
switching is accomplished by UL listed breakers, it is
usually not necessary to include additional branch
service protection.
Standard options available include terminals for front
or back connections, choice of trip time delay, current
ratings to 100 amperes and single or multi-pole
sections.
Current and Voltage Ratings
Single pole and multi-pole breaker ratings are available up
to 100 amperes, 240Vac or 125Vdc. The special configuration
for Marine use has a 120V/240Vac rating for current rating
up to 100 amperes.
Master Drawing
Standard circuit breaker terminal and configurations are
shown. For other types, consult factory.
+.015
2.250 -.005
+0.38
[57.15] -0.13
2.750
[69.85]
2.156
[54.76]
5.800
[147.32]
4.844
[123.04]
1.375
[34.92]
1.125
[28.58]
4.750
[120.65]
2.375
[60.32]
.220
[5.59]
1.026
[26.06]
(TYP.)
4X MTG. SLOT
Clearance for
8-32 Screw
(TYP.)
1/4 - 20 Studs
2.610
[66.29]
3.550
[90.17]
.375
[9.53]
10 - 32 or 1/4 - 20 Screw Terminals
.390
[9.91
2.156
[54.76]
5.125
[130.18]
3.550
[90.17]
4.750
[120.65]
(REF)
.750
[19.05]
DIMENSIONS
Number of Poles
9
8
6
4
2
Note: Tolerance ± .015 [.38] unless noted. Dimensions in brackets [ ] are millimeters.
Width
9.324 [236.83] Max
8.288 [210.52] Max
6.216 [157.89] Max
4.144 [105.26] Max
2.072 [52.63] Max
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Trip Time Delay
Three inverse time delays are available to permit close coor-
dination with various loads. Delays 51 and 61 are short
delays for electronic loads. Delays 52 and 62 are medium
delays for mixed loads. Delays 53 and 63 are long delays for
motor loads.
Width
(SEE TABLE)
6-32 MTG. Insert
.160 [4.06] MIN. screw depth
.310 [7.87] MAX. screw depth
(TYP)
.562
[14.27]
.530
[13.46]
.800
[20.32]
MAX.
2.610
[66.29]
1.220
[30.99]
.125
[3.18]
.200 (TYP.)
[5.08]
.485
[12.32]
209/219/229/249/279
209/219/229 MULTI-POLE CIRCUIT PROTECTORS
Common-Trip Construction
All multi-pole protectors contain an internal trip bar which
opens all poles in the event of an overload in any pole.
Handles are ganged externally for simultaneous actuation.
Individual poles may differ in ratings, delays and
configurations, providing an almost limitless number of
combinations.
Multi-pole protectors (up to 6 poles) easily satisfy special
modern day circuitry. Series, shunt, relay and auxiliary switch
construction add to the versatility of design engineering.
Airpax’s sales engineering force is ready to assist in proper
unit selection, both for equipment protection and economical
design.
Three Phase, Four Pole Includes Control Protector
Remote shutdown of equipment is sometimes necessary or
desirable in today’s sophisticated equipment. The 219 four
pole assembly fills this need for three phase operation. Three
of the four poles are designed for the circuit’s proper
operating current and over-current protection. The fourth
pole may be designed for instantaneous tripping by logic
circuitry, interlocks or from a manual remote site or control.
The control power required would be quite low, with voltages
from 5 to 125Vdc, or 5 to 240Vac available. The fourth pole
construction is optional. It may be either series, shunt or
relay, depending on the application required. When
specifying, both the minimum trip voltage and Hz are required.
Factory consultation is readily available.
Front Connected Solderless Connector
(Back Mounted)
2.072
(52.63)
MAX.
.562
[14.27]
.530
[13.46]
2.250
[57.15]
2.750
[69.85]
1.125
[28.58]
4.750
[120.65]
4X 6-32 MTG. INSERT
.160 MIN. SCREW DEPTH
[4.06]
.310 MAX. SCREW DEPTH
[7.87]
3.0 MM ISO THD. OPTIONAL
+.015
-.005
+0.38
-0.13
2.156
[54.76]
2.610
[66.29]
.220
[5.59]
.700
[17.78]
MAX.
1.220
[30.99]
.125
[3.18]
.200
[5.08]
.485
[12.32]
See available
mounting brackets
below
5.800
[147.32]
4.844
[123.04]
1.375
[34.93]
2.375
[60.32]
.220
[5.59]
1.026
[26.06]
2X MTG. SLOT
CLEARANCE FOR
8-32 SCREW
DIMENSIONS
Number of Poles
10 - 32 or 1/4 - 20 Screw Terminals
.390
[9.91]
Width
1.026 ± .010 [26.06 ± .254]
2.072 [52.63] Max
3.108 [78.94] Max
4.144 [105.26] Max
5.180 [131.57] Max
6.216 [157.89] Max
Slotted Mounting Bracket
terminal codes -2, -3, -5, -7, -3M,
-5M, -7M
Short Mounting Bracket
terminal codes -2C, -3C, -5C, -7C
1
2
3
4
5
6
.145
[3.68]
SCALE: 3/1
SCALE: 3/1
Note: Tolerance
±
.015 [.38] unless noted. Dimensions in brackets [ ] are millimeters
Caution: Elongation of mounting holes may be necessary for units with more than 6 poles
and units up to 12 poles due to tolerance compounding
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229D (MARINE) & 279 (COMMUNICATION) CIRCUIT PROTECTORS
UL-1500 Ignition Protection
The 229D family is certified to UL-1500 which covers
Ignition Protected circuit protectors. This specification
requires devices to be used in accordance with the
requirements of U.S. Coast Guard and Fire Protection
Standard for Pleasure and Commercial Motor Craft, ANSI/
MFPA No. 302.
The ratings available are 100 amperes or less at 65Vdc or
240Vac. Maximum IC, 1000 amperes. Consult factory for
application details.
The 299D series is available with interlocking to prevent on
board and shore power being used simultaneously.
Combination of ON-OFF switching the protection function
offers a simplified solution for your electrical systems.
UL 489A Communications Equipment Protection
The 279 Series complies with the requirements of UL 489A,
Circuit Breakers for use in Communication Equipment,
meeting the need for protection at higher DC voltages.
The available ratings are 100 amperes or less at 160Vdc.
Maximum short circuit interrupting current is 5000 amperes.
The 279 series available only in a series trip configuration.
Please consult Sensata for specific application details.
209/219/229 CONFIGURATIONS
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 indicates circuit status. In addition to
providing conventional overcurrent protection, it’s
simultaneously used as an ON-OFF switch.
SEE NOTE A
LINE
219/229 CONFIGURATIONS
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, tem-
perature, 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 after trip.
Dual Coil
Providing for both a voltage trip and a current trip function in
a magnetic circuit protector is common practice. These two
coil protectors provide remote or automatic opening of one or
more circuits with a low level signal.
The voltage coil will trip the protector instantaneously while
the current coil provides normal inverse time delays. The volt-
age coil is not rated for continuous duty and therefore, the
voltage must be removed when the breaker trips.
Since both coils are housed within the same pole, the space
savings are substantial.
SEE NOTE A
LINE
LOAD
1.000
[25.40]
RELAY
RELAY
3.550
[90.17]
LINE
COIL
COIL
Relay Trip
1.250
[31.75]
LOAD
LOAD
3.550
[90.17]
.750
[19.05]
.190
[4.83]
Dual Coil
.750
[19.05]
This option is not available with 64, 65 or 66 delays.
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.
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 configura-
tion is becoming increasingly more important for sensitive
circuitry and denser packaging in automation systems.
Available in series, shunt or relay configurations.
.295
[7.49]
.110
[2.79]
Auxiliary Switch
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.
(Applies to Series Trip Only)
C
NO
NC
SEE NOTE A
LINE
LOAD
SHUNT
3.550
[90.17]
V. COIL
LINE
LOAD
Shunt Trip
1.250
[31.75]
3.550
[90.17]
3.128 MAX.
[79.45]
REF. FROM
BACK OF
MOUNTING
PANEL.
.750
[19.05]
.190
[4.83]
Dual Coil
-IREC4
-IREG4
1.563
[39.70]
Quick Connect Terminals
.312
.187
[4.75]
[7.92]
-IREC5
-IREG5
.750
[19.05]
Note:
Tolerance ± .015 [.38] unless noted. Dimensions in brackets [ ] are millimeters.
A: 0-50 Amps, 10-32 Studs .625 ± .062 [15.88 ± .157 ] Long, 51-100 Amps, 1/4 - 20 Studs,
.750 ± .062[19.05 ± .157 ] Long.
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