Time Mark EX257B-415VAC/50HZ - 3-Phase Monitor, Auto Reset, 415VAC, Yellow, 340-440VAC, 50Hz, 3.3W

Name: Time Mark EX257B-415VAC/50HZ - 3-Phase Monitor, Auto Reset, 415VAC, Yellow, 340-440VAC, 50Hz, 3.3W
Brand: Time Mark
SKU: Time MarkEX257B-415VAC/50HZ
Price: 75.37 USD
Availability: InStock

0 reviews | UPC: 662917001763 | Model: Time Mark EX257B-415VAC/50HZ

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3-Phase Monitor, Auto Reset, 415VAC, Yellow, 340-440VAC, 50Hz, 3.3W

Note: Image shown is for illustration purpose only, actual product may vary
3-Phase monitor
Automatic reset
Nominal AC(phase to phase): 415VAC
Case color: Yellow
Adjustment range: 340-440VAC
Frequency: 50Hz
Power: 3.3W
ABS plastic cover
8-pin socket mounting (sold separately)
Detects phase loss, low voltage, phase reversal
5-year unconditional warranty

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3-Phase Monitor Relay Function	Phase Loss/Phase Reversal/Under Voltage Only	Phase Loss/Phase Reversal/Under Voltage Only	Phase Loss/Phase Reversal/Under Voltage Only	Phase Loss/Phase Reversal/Under Voltage Only	Phase Loss/Phase Reversal/Under Voltage Only
Max Nominal Phase to Phase Voltage (monitors)	415 VAC	120 VAC	480 VAC	240 VAC	240 VAC
Monitor Relay Contact Type	SPDT	SPDT	SPDT	SPDT	SPDT
Compare	Add to compare	Add to compare	Add to compare	Add to compare	Add to compare

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Time Mark EX257B-415VAC/50HZ - 3-Phase Monitor, Auto Reset, 415VAC, Yellow, 340-440VAC, 50Hz, 3.3W

Note: Image shown is for illustration purpose only, actual product may vary
3-Phase monitor
Automatic reset
Nominal AC(phase to phase): 415VAC
Case color: Yellow
Adjustment range: 340-440VAC
Frequency: 50Hz
Power: 3.3W
ABS plastic cover
8-pin socket mounting (sold separately)

The Time Mark EX257B-415VAC/50HZ 3-Phase Monitor continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the unit will detect phase loss on a loaded motor even when regenerated voltage is present. The EX257B-415VAC/50HZ model offers 415 VAC of nominal AC voltage, yellow case color, 340-440VAC adjustment range, 50Hz frequency, and 3.3W power consumption.

This device consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay. When the 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 monitor will automatically reset (a manual reset version is also available).

The Model 257 series does not require a neutral connection and can be used with Wye or Delta systems. Voltage ranges are sufficiently wide to allow for proper adjustment to existing conditions. Both TRIP and NORM condition indicators are provided to aid in adjustment and system trouble-shooting.

Dimensions:

Dimensions have tolerance of ± 0.06

Typical Application:

Model: EX257B-415VAC/50HZ Specifications
Description	3-phase monitor
Automatic Reset	Yes
Manual Reset	No
Phase Sensing	Phase Reversal,Phase Loss
Trip Delay	No
Trip Restart	No
Voltage Sensing	Under Voltage Protection
Nominal AC(phase to phase)	415VAC
Case Color	Yellow
Adjustment range	340-440VAC
Frequency	50Hz
Power consumption	3.3W
Transient protection	2500VACfor 10ms
Repeat accuracy	± 0.1% of set point (fixed conditions)
Response time	50msdrop out
Dead band	Approximately 2%
Output contacts	SPDT 10 amps at 240VAC resistive
Expected relay life	Mechanical: 10 million operations Electrical: 100,000 operations at rated load
Operating temp	-20° to +131° F
Humidity tolerance	0 -97% w/o condensation
Enclosure material	ABS plastic cover
Mounting	8-pin socket ( **sold separately)
Weight	5 ounces
Agency approvals	UL Recognized* and CSA Certified*Conditionsof acceptability:(1) the 380V and 480V versions must be used with a UL Recognized 600VACsocket. (2) For use in a Pollution Degree 2 environment (3) To be installed on the load side of branch circuit protection rated 10A.

Tech Specs

Three Phase Monitor Relays
3-Phase Monitor Relay Function	Phase Loss/Phase Reversal/Under Voltage Only
Max Nominal Phase to Phase Voltage (monitors)	415 VAC
Monitor Relay Contact Type	SPDT
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.
Safety Approval	CSA, UL
Product Weight	0.31 LBS
Product Height	3.52 IN
Product Length	2.44 IN
Product Width	1.75 IN
Shipping Weight	0.35 LBS
HTS/Schedule B Number	8504.50.8000
ECCN Number	EAR99
Country of Origin	United States
Shipping Height	3.52 IN
Shipping Length	2.44 IN
Shipping Width	1.75 IN