1-1437597-7 Tyco Electronics, 1-1437597-7 Datasheet - Page 226

• Manufacturer Part Number: 1-1437597-7
• Description: Switch Key Lock ON OFF SPST 90° Flat Key 1A 120VAC Screw Panel Mount/Screw Mount
• Manufacturer: Tyco Electronics

Specifications of 1-1437597-7

• Terminal Type: Screw
• Switch Configuration: ON OFF
• Pole Throw Configuration: SPST
• Maximum Ac Voltage Rating: 120 V
• Mounting: Panel Mount/Screw Mount

1. Determine how many contacts are required for the application, and what contact closure sequence is
2. Make a truth table similar to that shown in the example at the bottom of the page, in which each contact required
3. Refer to the contact sequence table (below). Find the cam type that will provide all of the required contact closure
4. Now refer to the tables on pages I5-I6 for 22mm and pages I12-I13 for 30mm to find the operator model that has
SELECTOR & KEYLOCK OPERATORS
ALCOSWITCH selector and keylock operators, in combination with the contact blocks
listed on page I8, are designed to fulfill the circuit requirements of almost any 2- or 3-
position control application. Each operator has two locations (upper and lower) into
which contact blocks may be snap-mounted. Up to four contact blocks may be stacked
in each location, the maximum number depending on the contact block models chosen
and the contact closure sequences required. (Note: only one logic level block may be
used in each location.)
CONTACT CLOSURE SEQUENCE CHART
Example: An "Off-On-Reset" circuit control requires a 3-position or 2-position
keylock switch. The key is to be removable in the "OFF" and "ON" position and the
"Reset" position must be momentary (spring return from right to center). All
contacts are open in the "Off" position, and two contacts are closed in the "On"
position. In the "Reset" position a third contact must close and one of the contacts
Referring to the Contact Closure Sequence Table, it is seen that cam Type 3
provides these sequences. In addition, the contact block models that should be used
are given; model VA0 (or FA0 for contact No. 1, to be installed in the upper contact
block location; model V40 (or F40) for contact No. 2, to be installed in the lower
Catalog 1308390
Issued 9-04
www.tycoelectronics.com
a. 2-Position Operators: There are only two practical possibilities for contact closure sequence. Using "O" to
b. 3-Position Operators: There are six practical possibilities for contact closure sequence. Using "O" to indicate an
needed for each contact.
by the circuit of the application is represented. Up to 12 contacts may be used for each operator, depending on the
sequences required and the types of contact blocks chosen.
sequences, and note which contact block model will be needed for each circuit contact.
the cam type needed in the application and that provides the desired features with respect to action (maintained or
momentary) type of actuator (lever or key), etc.
indicate an open and "X" to indicate a closed contact, the options are shown in the table to the right. All Reliant
22 and Series 6000 2-position selection selector and keylock operators provide these options.
open contact, and "X" to indicate a closed contact, the options are shown in the table to the right. Four different
cam types are available to provide various combinations of contact closure sequence. Cam Type 2 (see table
below) provides the most popular closure sequence, and Cam Type 3 provides all six possibilities, depending on
the contact block models chosen. Note that each operator has an upper and lower contact block location, and that
the cam profiles are different for upper and lower locations, except for Cam Type 2.
X = Closed
V40 or F40 Red
V50 or F50 Green
VA0 or FA0 Yellow
VR0 or FR0 Black
Contact Blocks
Model
Dimensions are in inches
and millimeters unless otherwise
specified. Values in parentheses
or brackets are metric equivalents. to change.
0 = Open
6000 & Reliant'22 Series
Series 6000 and Reliant'22 Contact Selection
2-Position Operators
upper & lower
CAM Type 1
locations
*VA0 and FA0 contacts overlap with VR0 and FR0 contacts between
X
X
0
0
0
position of 2 position operators providing “Make Before Break” action.
X*
0*
X
1
0
Number
Contact
Dimensions are shown for
reference purposes only.
Specifications subject
1
2
3
X 0 0
X X 0
location
2 0 1
0 0 X
0 X X
upper
CAM Type 2
Off
location
X 0 0
X X 0
2 0 1
0 0 X
0 X X
(2)
O
O
O
lower
in the "on" position must open. This contact closure sequence is shown by the
following truth table:
contact block location; and model V50 (or F50) for contact No. 3, which may be
used in either the upper or lower contact block location, behind one of the other two
blocks. Reference to the operator model listings shows that model RM272 provides
cam Type 3 and has desired momentary action and key removability.
On
(0)
X
X
O
X 0 0
X X 0
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
location
2 0 1
0 0 X
0 X X
upper
CAM Type 3
Reset
(1)
3-Position Operators
X
O
X
X 0 X
X X 0
2 0 1
0 X 0
0 0 X
location
lower
blocks in
upper
position
blocks in
lower
position
X 0 0
X 0 0
location
2 0 1
0 X X
0 X X
upper
CAM Type 4
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
X X 0
X X 0
location
2 0 1
0 0 X
0 0 X
lower
2 Position Operators
3 Position Operators
left
O
X
O
X
O
X
2
left
O
X
0
center
O
O
X
X
X
O
0
right
X
O
1
right
X
O
X
O
O
X
1
I9
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