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A-C AND D-C RELAYS
Type TF and TH - Transistor Sensitive Relays
Standard and Heavy Duty
WHEN ORDERING SPECIFY
Cataf^ numhir'
DESCRIPTION
Type TF and TH relays are resistance sensitive relays. Operation of the control
relay occurs when the resistance in the sensing circuit is low enough to permit
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transistor conduction. Standard or heavy duty relay contacts are available. Standard duty relay is two pole double throw rated at 10 amperes 115 volts. Contact pick up is 10 milli-seconds, drop out 45 milli-seconds. Relay will operate
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in temperature range of --25C to +80C. Heavy duty relay is rated at 600 volts maximum, control circuit only. Contact pick up is 25 milli-seconds, drop out 20 milli-seconds. Relay will operate in tempera
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ture range of --30C to +50C.
Type TF Standard Duty
Type TH Heavy Duty
TYPE TF STANDARD DUTY
Ratings ' 10 Amperes, 115 Volts, 60-50 Cycles
. Contacts--2 PDT
Maximum Ambient Temperature
Type of
Transistor
Open Type Cat. No. Price
General Purpose NEMA1
Cat. No. ' Price
13535-
. 13535- ,
80' C
NPN Silicon H87 $37. < H88 1-.' $44.
C<3O1
80 C
PNP Silicon H98
37. . . H99 \Mi 44.
a.
TYPICAL OPERATIONAL DATA OF
STANDARD DUTY
TYPE TH HEAVY DUTY
Ratings 115, 208/220, 440 and 550 Volts--50,60 Cycles
Contact Data
Poles, Throw and Terminals
Contacts
Amperes Non-
Inductive
550 Volts Max.
Open Type
General Purpose NEMA1
Cat. '
Cat. v
-No. Price No.-, Price
13535-
13535-
S PST--2 Term. N.O.
15 .. <H91 ' $41. . H92 $48.
D PST--4 Term. N.O.
10 ; H93 : 44. >.H94'. 51.
D PST--4 Term. N.C.
5 H95 45. ' H96. : 52.
S PDT--4 Term. N.O.-N.C. 10 +89 46. H90 53.
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Current through
External Resistance
Cat Nos.
T3S3T
External Terminal Connections
Used
D-c Voltage
Open Pick Drop
Circuit Up Out
Closed Open
terminal #11 (Milliamperes)
Pick Drop
Normal Up Out
(Ohms) between terminals affording
operation
Pick Up Drop Out
TYPICAL WIRING DIAGRAMS
#11 and #8 9-10V. Circuit Circuit 1.35 0.65 0.12
6,000 35,000
H87& #11 and #7 37V.
0.67 0.11 11,000 148,000
H88 0#U and #6 37V. V..
0.66 0.11 41,000 170,000
#11 and #10 0 0.75V. 0.65V.
0.79 0.19
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INVERSE OPERATION
#11 and #10
With #8 and #11 shorted
900 500
#11 and #8 9-10V. H98 & #11 and #7 37V. ~
... 1.35 0.30 0.12
0.29 oni
20,000 75,000 50,000 300,000
H99 0#11 and #6 37V.
0.28 0.11 110,000 320,000
#11 and #10 0 0.7V. 0.64V.
0.50 0.15
INVERSE OPERATION
#11 and #10
With #8 and #11 shorted
450 350
0 To insure protection of the transistor a minimum resistance of 2000 ohms should always be in
sensing circuit.
joo TYPICAL OPERATIONAL DATA OF M zqSWCSO ,' HEAVY DUTY
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T
External Terminal
Con nections
Used
D-c Voltage
Open Pick Drop Circuit Up Out
Current Thru Term. #8
(Milliamperes)
External Resis
tance Between Terminals #8 and #7 Affording
Operation (Ohms)
Nor Pick Drop Pick Drop mal Up Out Up Out
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#8 and #7 08
Closed Open Circuit Circuit 4.3 2.0 1.0 3,000 6,000
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#8 and #4 0 0.2
o #8 and #6--22 volts.
0.14 ... 2.0 1.0
...
...
CUTLER-HAMMER
DIMENSIONS, page 169
Standard Duty With Liquid Probes
DISCOUNT SCHEDULE ICD
166