1226
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Specifications and availability
subject to change.
P&B
Catalog 1308242
Issued 3-03
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
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
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.
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.
Initial Dielectric Strength
Between Open Contacts: 500V rms, 60 Hz.
Between All Other Conductors: 500V rms, 60 Hz.
Environmental Data
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.
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.
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.
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.
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.
INPUT
VOLTAGE
ON
OFF
N.O. RELAY
CONTACTS
ON
OFF
CONTROL
SWITCH
ON
OFF
ON
OFF
N.O. RELAY
CONTACTS
TIME
INPUT
VOLTAGE
ON
OFF
N.O. RELAY
CONTACTS
ON
OFF
TIME
TIME
Input Voltages & Limits @ 25°C
Voltage Nominal Minimum Maximum
Type Voltage Voltage Voltage
AC 24 20 28
120 105 130
240 210 260
DC 24 20 32
Note: DC voltage must be filtered (5% p-p ripple max. at nom. voltage).
AC models will operate on 50 or 60 Hz.
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.
