Magnetic Circuit Protectors
209 Series
Introduction
249 Power Selector System
Multi-Pole
Configurations
Operating Characteristics
Delay Curves
Specifications
Decision Tables
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209/219/229/249/279 Series
Hydraulic Magnetic Circuit Protectors
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.
187
209 Series - Introduction
http://airpax.sensata.com
209/219/229 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
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]
3.550
[90.17]
Back Connected Stud Terminal
(Front Mounted)
A
.700
[17.78]
MAX.
.220
[5.59]
2.610
[66.29]
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
IELR Series - Introduction
188
209 (E-frame)
249 POWER SELECTOR BREAKER SYSTEM
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.
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.
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.
189
209 Series - 249 Power Selector Breaker System
http://airpax.sensata.com
249 Master Drawing
Width
(SEE TABLE)
+.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]
Note: Tolerance ± .015 [.38] unless noted. Dimensions in brackets [ ] are millimeters.
DIMENSIONS
Number of Poles
9
8
6
4
2
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
209 Series - 249 Power Selector Breaker System
190
209/219/229/279
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 (E-frame)
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