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1
First Decision
LEG DECISION TABLES
Select Type and Terminal
Type Description
Handle and Mounting Options
LEG
One toggle handle per unit
Standard toggle/mounting,
The ordering code for LEG circuit breakers may be
determined by following the decision steps in the tables
shown here.
LMG
LEGH
LMGH
One toggle handle per unit
mid-trip indication
One toggle handle per pole
One toggle handle per pole
mid-trip indication
S
ZX
BX
no designation required
Toggle w/ snap-in mounting
ZX Rocker w/ integral mounting*
BX Rocker w/ integral mounting
The coding given permits a self-assigning part number
but with certain limitations. Special applications may
require a factory-assigned part number. Typical examples
are units with mixed ratings, combinations of styles, or
constructions not listed in the third decision table. With
these, it is suggested that order entry be by description
and/or drawings and a part number will be established.
Additionally, it is standard policy to establish a factory-
assigned part number whenever a descriptive drawing
exists to provide cross reference, traceability and
manufacturing control.
Note: All types are UL489 listed, CUL certi ed Note: Add "F" for at screw terminals
* Not available on mid-trip units
2 Second Decision
Poles and Terminals
Push-on Screw
Terminals Terminals
1 6 Single pole
11 66 Two pole
*Not available in toggle seal handle type.
When specifying a circuit breaker for AC motor start
or high inrush applications, the peak amplitude and surge
duration should be specified for factory assistance in
rating selection.
Example:
LEG 6 - 1REC4 - 61 - 20.0
- 01 - V
For example, the following is the code for a single
pole, LEG screw type terminal, series unit with auxiliary
switch, designed for operation in a 50/60Hz circuit. It has
a short time delay, a rating of 20 amperes, a black marked
handle and is VDE approved.
3
Third Decision
Internal Con guration
1
2
3
4
4
5 6  7
Fourth Decision
Frequency and Delay
To determine the ordering number for your particular LEG
unit, simply follow the steps shown. You may use this
number to place an order or as a reference for further
questions you may have.
-1
-1REC4
-1REC5
-1REG4
-1RS4
Series
Series w/ auxiliary switch *
.110 quick connect
Series w/ auxiliary switch *
.187 quick connect
Series w/ auxiliary switch*
(gold contacts)
.110 quick connect
Series w/ alarm switch*,
electrical trip,
.110 Q.C. terminals
-61 50/60Hz short delay
-62 50/60Hz long delay
-63 50/60Hz motor start
-69 50/60Hz 125% instant trip
For addition of inertial delay, add an “F” to any
delay numeral.
* CEG types are only available with DC ratings
V = VDE Approved
Notes:
A. When “A” (metric thread mounting) is specified in the sixth
decision in combination with screw terminal option in the
second decision, metric screw terminals are supplied.
B. LEG, LEGH, LEGS, LEGHS, LEGZX and LEGBX circuit
breakers are designed to meet 8mm creepage and
clearance requirements for installation Category III,
Pollution Degree 3, Case A as measured in IEC 664.
Intended for use in equipment designed to comply with IEC
601 and 950 and VDE 0804 and 0805.
-1RLS4 Series w/ alarm switch*,
electrical trip, mid-trip only,
.110 Q.C. terminals
-3 Shunt
* Only one auxiliary switch is normally supplied on two pole
units. Switch is located in the right-hand pole (viewed from
terminal end) unless otherwise speci ed.
The shaded areas denote VDE approval
options. This approval requires the addition
of a V at the end of the part number. The V
will be added to any part number formed
entirely from shaded decisions. If
non-shaded areas are selected, the unit will
not be VDE Approved, but other
approvals still apply.
C = CCC Approved
This approval requires the addition of a C at the end
of the part number. The unit will not be VDE Approved.
119
LEG Series - Decision Tables
http://airpax.sensata.com
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