Catalog 1308242
Issued 3-03
P&B
CH
series
Mid- To Low-Priced
CMOS IC Time Delay Relay
•
Choice of timing modes
– Delay on operate
– Delay on release
– Interval on
•
Fixed or knob adjustable types
•
10A output relay with DPDT contacts
•
Various models time from 1 to 180 sec.
File E22575
File LR15734
Users should thoroughly review the technical data before selecting a product part
number. It is recommended that user also seek out the pertinent approvals files of
the agencies/laboratories and review them to ensure the product meets the
requirements for a given application.
Timing Modes
Delay on operate
– Delay period begins when input voltage is applied. At
the end of the delay period, the relay will operate and will not release until
input voltage is removed. Reset occurs when input voltage is reapplied.
INPUT
VOLTAGE
ON
OFF
TIME
Contact Data @ 25
°
C
Arrangements:
2 Form C (DPDT).
Material:
Silver-cadmium oxide alloy.
Rating:
10A @ 30VDC or 277VAC, resistive; 1/2 HP @ 250VAC; 1/3 HP @
120VAC.
Expected Mechanical Life:
10 million operations.
Expected Electrical Life:
100,000 operations, min., at rated load.
N.O. RELAY ON
CONTACTS OFF
Initial Dielectric Strength
Delay on release
– Input voltage must be applied continuously to operate
the internal relay. When the control switch is closed, the relay energizes.
When the control switch is opened, timing begins. When timing is
complete, the relay will de-energize. Time may be reset to zero during
timing by closing the control switch.
CONTROL
SWITCH
ON
OFF
TIME
Between Open Contacts:
500V rms, 60 Hz.
Between All Other Conductors:
500V rms, 60 Hz.
Input Data @ 25
°
C
Voltage:
24 through 240VAC and 24VDC.
Power Requirement: AC Types:
Typically less than 3 VA.
DC Types:
Typically less than 3 W.
Transient Protection:
Yes.
Reverse Voltage Protection:
Yes.
N.O. RELAY ON
CONTACTS OFF
Input Voltages & Limits @ 25
°
C
Interval on
– The relay energizes and timing begins when input voltage is
applied. At the end of the time delay period the relay will de-energize.
Reset is accomplished by removing, then reapplying, the input voltage.
INPUT
VOLTAGE
ON
OFF
Voltage
Type
AC
Nominal
Voltage
24
120
240
24
Minimum
Voltage
20
105
210
20
Maximum
Voltage
28
130
260
32
DC
N.O. RELAY ON
CONTACTS OFF
TIME
Note:
DC voltage must be filtered (5% p-p ripple max. at nom. voltage).
AC models will operate on 50 or 60 Hz.
Environmental Data
Timing Specifications
Timing Ranges:
From 1 to 180 sec.
Timing Adjustment:
Fixed and knob adjustable.
Tolerance (for AC units add
±
1/2 cycle 60 Hz.):
Knob Adj. Types:–0,
+20% of max. specified at high end of timing range;
min. specified, or less, at low end.
Fixed Types:
±
5%.
Res. Adj. Types:
±
5% at high end of timing range; min. specified, or less,
at low end.
Delta Time (for AC units add
±
1 cycle 60 Hz.):
±
10%.
Repeatability (for AC units add
±
1 cycle 60 Hz.):
±
2%.
Release Time:
125 ms, typ.; 200 ms, max.
Recycle Time:
125 ms, typ.; 200 ms, max.
Dimensions are shown for
Temperature Range: Storage:
-55°C to +85°C.
Operating:
-10°C to +55°C.
Mechanical Data
Termination:
8- or 11-pin octal style plug.
Enclosure:
White plastic case. Knob adjustable types have dial scale for
reference only.
Sockets:
Models with 8-pin base fit either 27E122 or 27E891 (snap-on)
screw terminal sockets. 11-pin types fit either 27E123 or
27E892 (snap-on) screw terminal sockets.
Weight:
6 oz. (170g) approximately.
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
1226
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Catalog 1308242
Issued 3-03
P&B
Ordering Information – Authorized distributors are more likely to stock boldface items listed below.
Delay on Operate Models
Voltage
24VAC
Time
1 to 10 Sec.
1 to 180 Sec.
1 to 10 Sec.
1 to 60 Sec.
1 to 180 Sec.
10 Sec.
1 to 10 Sec.
1 to 10 Sec.
1 to 60 Sec.
1 to 180 Sec.
Adjustment
Knob
Wiring Dia.
1
Part Number
CHB-38-30001
CHB-38-30003
CHB-38-70001
CHB-38-70002
CHB-38-70003
CHA-38-70001
CHB-38-80001
CHD-38-30001
CHD-38-30002
CHD-38-30003
Delay on Release Models
Voltage
24VAC
120VAC
24VDC
Time
1 to 10 Sec.
1 to 10 Sec.
1 to 60 Sec.
1 to 180 Sec.
1 to 10 Sec.
1 to 180 Sec.
Adjustment
Knob
Knob
Knob
Wiring Dia.
3
3
3
Part Number
CHB-38-30011
CHB-38-70011
CHB-38-70012
CHB-38-70013
CHD-38-30011
CHD-38-30013
120VAC
120VAC
240VAC
24VDC
Knob
Fixed
Knob
Knob
1
1
1
1
Interval on Models
Voltage
120VAC
24VDC
Time
1 to 10 Sec.
1 to 60 Sec.
1 to 180 Sec.
1 to 10 Sec.
Adjustment
Knob
Knob
Wiring Dia.
1
1
Part Number
CHB-38-70021
CHB-38-70022
CHB-38-70023
CHD-38-30021
Outline Dimensions
➛
2.406 MAX.
(61.1)
➛
.56
(14.2)
➛
➛
Wiring Diagrams – Bottom Views (pins numbered clockwise from keyway)
EXTERNAL RESISTOR
EXT SWITCH*
➛
➛
➛
➛
➛
+
INPUT
_
(DC POLARITY INDICATED)
INPUT
(DC POLARITY INDICATED)
+
_
+
AC INPUT
-
Fig. 1
8 Pin
Fig. 2
11 Pin
Fig. 3
11 Pin
* If control switch is closed when power is applied, relay will immediately energize. A 50 millisecond minimum switch closure is required. IMPORTANT: A dry circuit switch is recommended. A
“dry circuit” switch is one rated to reliably switch currents of less than 50mA. Use of a switch rated for other than dry circuit may result in failure of the time delay relay to function properly.
** Note:
Input polarity for DC operation. For most reliable operation on AC, connect high side to “+” and low side to “–”.
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
➛
➛
➛
➛
➛
➛
➛
.60
(15.2)
2.937 MAX.
(74.6)
1.781 MAX.
(45.2)
➛
➛
➛
➛
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
1227
Refer to inside back cover.
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