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 multipole 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.
209/219/229 MAGNETIC CIRCUIT PROTECTORS
Terminal Style
DIMENSION A
209 E-Frame circuit breakers may be specified with either screw terminals, stud or
Number of Poles Dimensions A
solderless connectors.
1 1.026 .010 [26.06 3.30]
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 2 2.072 [52.63] Max
either screw terminals or solderless connectors.
3 3.108 [78.94] Max
Refer to Sixth Decision Table for front connected terminal information.
4 4.144 [105.26] Max
Barriers for back connected terminal styles are supplied on multi-pole units only. Line
5 5.180 [131.57] Max
and load connections may be made to either terminal and terminals will be identified as
shown on the following page. 6 6.216 [157.89] Max
Page 1
www.sensata.com
Copyright 2018 Sensata Technologies, Inc. 2.610
[66.29]
.700
1.220
[17.78]
A
[30.99]
.220
MAX.
.125
.200
[5.59] [3.18]
[5.08]
.562
[14.27]
.530
.485
[13.46]
[12.32]
+.015
-.005
2.250
+0.38
5.800
[57.15]
-0.13
[147.32]
2.156
[54.76] 4.844
2.750
35
[123.04]
[69.85]
1.125
35
1.375
2.375
[28.58]
[34.92] [60.32]
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
.220
[5.59]
3.550
[90.17]
A
.700
2.610
[17.78] [66.29]
.220
MAX.
[5.59]
2.156
[54.76]
+.015
5.125
2.250 -.005
2.750 [130.18]
[57.15] +0.38
[69.85]
-0.13
1.125
1.375
[34.92] [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 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
249 POWER SELECTOR BREAKER SYSTEM
The 249 Power Selector Breaker System combines magnetic-hydraulic branch circuit Trip Time Delay
overload protection and a power system selector switch in one device. Three inverse time delays are available to permit close coordination with various
loads. Delays 51 and 61 are short delays for electronic loads. Delays 52 and 62 are
The 249 is designed to allow selection of any one of two, three or four independent medium delays for mixed loads. Delays 53 and 63 are long delays for motor loads.
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 Current and Voltage Ratings
this arrangement, it is impossible to switch ON more than one power system at Single pole and multi-pole breaker ratings are available up to 100 amperes, 240Vac
a time. or 125Vdc. The special configuration for Marine use has a 120V/240Vac rating for
current rating up to 100 amperes.
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 Master Drawing
not necessary to include additional branch service protection. Standard circuit breaker terminal and configurations are shown. For other types,
consult factory.
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.
Page 2
www.sensata.com
Copyright 2018 Sensata Technologies, Inc.