Littelfuse TCMOV Varistor Series - Manual (Page 5)

© 2014 Littelfuse, Inc. 235
Revised: January 16, 2014
Varistor Products
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/tcmov34s.html for current information.
TCMOV Varistor Series
Thermally Protected Varistors > TCMOV Series
Hi–En
E
rgy Mo
V’s
TCMOV S
eries
7±0.20 7±0.20
24.6±1.0
14 Min
41 Max
46.5 max
1.8
1.8
3.75
3.5
3.5±0.1
7.6
6.5 Min
3*0.8±0.1 2*1.6±0.3
17 Max
W
0.35±0.1 0.55±0.1
0.3±0.1
1.6±0.3
13±0.5
5.3±1.0 6.7±1.0
LF9
TCMOV34S321MP
1208
3.5 4.9
C:7±0.20 C:7±0.20
D:24.6±0.7
L:3.8 Min
E:41.0 Max
I:44.2±0.5
1.8
B:6.0±0.3
0.35±0.1 0.55±0.1
W:10.6±0.3
LF9
TCMOV34S321TP
1243
3.5 H:2.7±0.2 4.9
F:16.5 Max
A:5.0±0.3
G:12.6±0.3
0.63
MP and NP Device Dimensions (in mm typical unless otherwise specified)
Note: The three short leads shown at bottom of device applies
only to MP devices. These leads do not exist on NP devices.
TP Device Dimensions (in mm typical unless otherwise specified)
Part Number: Dimension ‘W’:
TCMOV111-181 8.5±1.2
TCMOV201-251 9.4±1.2
TCMOV271-321 9.6±1.2
TCMOV421-551 9.8±1.2
PCB Layout Dimensions
8.25 8.25
9.0 24.6
41
16.5
13.4
10.6
0.94
Device Top
Device Bottom
12.6
Device Dimensions
S1 OFF
S3 Common
S2 ON
P1
P2
Primary side Secondary side
Galvanic isolation
Note: EXAMPLE ONLY - Connection to S2-S3 and S1-S3
depends on customer indication circuit and can vary.
R
LED
* LED is off when the product is normal (S2,S3 connected),
LED is on when the product disconect opens (switch change
status; S1,S3 connected as shown by dotted line ).
Thermal
Disconnect
MOV
S1 OFF
(Normal Open)
S3 Common
S2 ON
(Normal close)
P1
P2
Primary side Secondary side
Galvanic isolation
P1 P2
To Protected Circuit
S2
S1
P1
P2
Primary side Secondary side
Galvanic isolation
R
LED
* LED is off when the product is normal
LED is on when the product disconect opens
To Protected Circuit
LF9
TCMOV34S321MP
1208
S2
S1
P1
P2
Primary side Secondary side
Galvanic isolation
P1 P2
LF9
TCMOV34S321TP
1243
S2 S1
S3
S2 S1
Thermal
Disconnect
MOV
MP Device Lead Configuration TP Device Lead Cofiguration
MP Device Application Example TP Device Application Example
Thermal
Disconnect
MOV
Thermal
Disconnect
MOV
Lead Configuration