Time Mark A252B 3-Phase Monitor, 3PH,480V

Name: Time Mark A252B 3-Phase Monitor, 3PH,480V
Brand: Time Mark
SKU: Time MarkA252B
Price: 111.94 USD
Availability: InStock

0 reviews | UPC: 662917001619 | Model: Time Mark A252B

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3-Phase Monitor, 3PH,480V 60 Hz,SPDT,SPST, cUL/UL

3PH,480V 60 Hz,SPDT,SPST, cUL/UL
Detects Phase Loss, Low Voltage and Phase Reversal
50Hz and 60Hz versions
Automatic Reset

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Product	Time Mark A252B 3-Phase Monitor, 3PH,480V 60 Hz,SPDT,SPST, cUL/UL	Time Mark 252B 3-Phase Monitor, 3PH,208/240V 60 Hz,SPDT SPST (N.O.), cUL/UL
Price
In Stock
3-Phase Monitor Relay Function	Phase Loss/Phase Reversal/Under Voltage Only	Phase Loss/Phase Reversal/Under Voltage Only
Max Nominal Phase to Phase Voltage (monitors)	480 VAC	240 VAC
Min Nominal Phase to Phase Voltage (monitors)	480 VAC	280 VAC
Compare	Add to compare	Add to compare

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Time Mark 252B 3-Phase Monitor

3 Phase Monitor

Detect phase loss on a loaded motor
For abnormal conditions
Driving an electromechanical relay
Does not require a neutral connection

The Model 252 3-Phase Monitor continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the Model 252 will detect phase loss on a loaded motor even when regenerated voltage is present.

This device consists of a solid-state voltage and phaseangle sensing circuit, driving an electromechanical relay with one SPDT and one SPST contact. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de-energize the relay. When the fault is corrected the Model 252 will automatically reset.

The Model 252 does not require a neutral connection and can be used with WYE or DELTA configured systems. Four versions cover 120V, 208/240V and 480V, 60Hz, and 380V, 50Hz. Adjustment ranges are sufficiently wide to allow for proper adjustment to existing conditions. Two LED indicators are provided to aid in adjustment and system troubleshooting.

Typical Application	Dimensions

General Specification
Model	B252B	252B	A252B	EX252B
Nominal AC Voltage	120VAC	208/240VAC	480VAC	380VAC
Adjustment Range	85-120VAC	160-240VAC	380-480VAC	300-380VAC
Frequency	60Hz			50Hz
Power Consumption	0.25W	0.50W	1.5W	1.25W
Transient Protection	2500V for 10ms
Repeat Accuracy	0.1% of set point (fixed conditions)
Response Time	0.05 seconds
Reset Time	0.05 seconds
Reset Type	Automatic
Dead Band	2%
Output Contacts	1 - SPDT 1 - SPST (N.O.)
Contact Rating	5A at 115VAC resistive
Expected Relay Life	Mech: 10 million operations Elec: 100,000 at rated load
Operating Temp	- 20º to 131º F
Humidity Tolerance	97% w/o condensation
Enclosure Material	ABS plastic
Mounting	8-pin socket (*order separately)
Weight	5 oz
Agency Approvals	UL Recognized (U.S. & Canadian

Three Phase Monitor Relays
3-Phase Monitor Relay Function	Phase Loss/Phase Reversal/Under Voltage Only
Max Nominal Phase to Phase Voltage (monitors)	480 VAC
Min Nominal Phase to Phase Voltage (monitors)	480 VAC
Electrical Approval (monitor relays)	CSA, UL
Time Mark Mounting	8-pin
Test Equipment General Attributes
Warranty	5 YEARS
Warranty Details	This product is warranted to be free from defects in materials and workmanship, and is covered by our exclusive 5-year Unconditional Warranty. Should this device fail to operate for any reason, we will repair it for five years from the date of manufacture.
Safety Approval	CSA, UL
Product Weight	0.41 OUNCES (0.026 LBS)
Product Height	3.52 IN
Product Length	2.44 IN
Product Width	1.75 IN
HTS/Schedule B Number	8504.50.8000
ECCN Number	EAR99
Country of Origin	United States
UPC	662917001619