TII EMC-240B AC Hardwired Surge Supressor



TII EMC-240B 

Surge Suppressors

Fast Response Time

Protection Available Indicators

Automatic Instant Recovery

Metal Housing

The tii EMC-240B Surge Suppressors are designed to protect the remote terminal of a digital loop carrier or similar electronic equipment. There are two models available with top or bottom wire entry that can be used on either 240-volt single phase or 120 volt service.

KEY PRODUCT BENEFITS

The  EMC-240B features totally solid state technology for reliability and quick response to surges. Two advanced, metal oxide varistors (MOV) are the primary protective elements.  These MOVs are each capable of 40,000 amps of surge current.  The protection  components are designed to failshort and are fused. After a surge, the suppressor automatically recovers and is ready for the next surge. In a rare event of MOV failure, the fuse opens and the indicator LED extinguishes.

INDUSTRY STANDARDS

Listed to UL 1449

 

ORDERING INFORMATION

Model No. Description

EMC-240B AC Surge Suppressor with Fuses and Failure Indicator, Top Wire En try, 18" Wire Leads

Standard Package:  5 Pieces

Weight:  3 lbs. each

S P E C I F I C A T I O N S

Response Time <5 Nanoseconds

Maximum Surge Current 40,000 Amps Per Line * **

Maximum Energy Absorption 2ms 360 Joules per Line

Initial Clamp Voltage (L-N) 240 Volts Nominal

Clamp Voltage @ 300A (L-N) 395 Volts Nominal

Clamp Voltage @ 1,000A (L-N) 450 Volts Nominal

Clamp Voltage @ 5,000A (L-N) 530 Volts Nominal

Clamp Voltage @ 10,000A (L-N) 600 Volts Nominal

Max Allowable Voltage (L-N) 150V rms 50-60Hz

Max Allowable Voltage (L-L) 275V rms 50-60 Hz

Failure Mode Failsafe (short) and Fused

Failure Indication LED Indicators

Surge Life @ 500A >10,000 Occurrences

Surge Life @ 2,000A >1,000 Occurrences

Surge Life @ 5,000A >300 Occurrences

Surge Life @ 10,000A >50 Occurrences

Operating Temperatures -40 +85C

 

*  Maximum surge current capability may be higher when both black wires are tied together in 120-volt service application as shown in circuit below.

** Current rating is limited by fuse in series.

Measurements are taken at the component connections. Response time and voltages at the equipment will be greater due to the inductance of the connecting wire to the EMC-240B.

All current test waveforms are 8 x 20 s.

Dimensions are in Inches

 


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800-543-8790
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