SPECIFICATIONS
Model A264 B264 C264 D264 EX264
Nominal AC Voltage
(phase to phase)
120VAC 208/240 VAC 480VAC 575VAC 380VAC
Adjustment Range 85-125V 160-260V 380-500V 450-600V 300-400V
Frequency 60 Hz 60 Hz 60 Hz 60 Hz 50 Hz
Power Consumption
(per phase)
0.25W 0.5W 1.5W 2.5W 1.5W
Transient Protection 2500VAC for 10msec
Repeat Accuracy ± 0.1% of set point (fixed conditions)
Response Time 2 +/- 2 to 20 +10/-2 seconds
Reset Time 0.15 seconds
Reset Type Automatic
Dead Band Approximately 8% of 125 VAC or 10 VAC
Output Contacts One (1) SPST N.O. One (1) SPST N.C.
Contact Rating 10 amps at 240VAC resistive
Expected Relay Life Mech: 10 million operations
Elec: 100,000 operations at rated load
Operating Temp - 40° to +130° F
Humidity Tolerance 0 - 97% w/o condensation
Enclosure Material 20 gauge steel
Mounting Surface
Weight 10 oz.
DESCRIPTION
The Model 264 3-Phase Monitor continuously monitors
3-phase Wye or Delta systems for abnormal conditions.
The solid-state electronic sensing circuit drives two
separate SPST relays, one normally open and the other
normally closed. An adjustable trip delay reduces or
eliminates nuisance tripping caused by momentary
voltage fluctuations on motor start-up.
Standard versions are 120V, 208/240V, 480V and 575V
at 60 Hz; and 380V at 50 Hz. Voltage ranges are
sufficiently wide to allow for proper adjustment to
existing conditions. Both TRIPPED and NORMAL indi-
cators are provided to aid in trip point adjustments and
system troubleshooting.
The Model 264 is not sensitive to line current and can
be used with any size motor or compressor.
4.31"
4.75"
3.87"
2.31"
3.38"
1.88"
2.70"
DIMENSIONS
l Detects Phase Loss, Low Voltage,
Phase Reversal
l Adjustable Trip Delay
l Isolated Contacts
l 5 Year Unconditional Warranty
MODEL 264
3-Phase Monitor
TIME MARK is a division of
Telephone: Main - (918) 438-1220
Sales - (800) 862-2875
Fax: (918) 437-7584
E-mail: sales@time-mark.com
Internet: http://www.time-mark.com
Doc No. 87A127 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
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