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Transformers
 
 
Current Transformers

Surface Mount Transformer
Current Sense

(TM) 3448G
GB International surface mount transformer. Current sense = 70:1 ratio. 500v isolation. 6 amps RMS. Operating temperature= -40ºC to 180ºC. Tape & Reel. 0.325" x 0.260" x 0.228". Power One uses this CT in many different supplies. 1.4 million pieces in stock!! Mfg. P/N: 3448G.
 

Airpax DC Transducer

(SEN) MAS61
Airpax DC transducer. Wire passes through 9/32" inner diameter hole @ transducer middle. 2" x 2-1/4" x 3"L. Gates / Harris P/N: 741-0001-000.
$1.50 ea - 75¢ (100+), 60¢ (1,000+), 40¢ (10,000+)
 
$75 each

Vitec Current Sense Transformer
DCR 11 ohms, 180 mH

(TM) 57P1820G
Vitec current sense transformer for switching power supply. 20 amps peak. 300 turns. DCR 11 ohms, 180 mH. Vitec calls these "Current Sense Inductors."
 

Vitec Current Sense Transformer
DCR 14 ohms, 73 mH

(TM) 57P1822
Vitec current sense transformer for switching power supply. 350 turn ratio. DCR 14 ohms, 73 mH. Vitec calls these "Current Sense Inductors."
$2 each - $1.75 (12+), $1.50 (100+),
$1.25 (500+), $1.10 (1,000+)
 
$1.75 - $1.50 (12+),
$1.29 (100+), 99¢ (1,000+)

Current Sensor
50 amp

(TM) CS60-050
Coil Craft 50/60 Hz current transformer measures 5-50 amps with a 1 turn primary passing through center hole. Increasing turn increases sensitivity. PC mount (3rd lead pictured is for stability.) 50 amps generates 280 mV typical in secondary. Center hole 3/8" diameter. Overall 7/16" x 1" x 1-1/8" high.
 

Current Transformer
62.5 : 1 Turns Ratio

(TM) LT1879
Current transformer. 62.5 : 1 turns ratio. 1-3/8" hole. Model 500, Mfg. P/N: LT1879. 3-3/4" x 4" x 1-1/2". NSN: 5950-00-072-6868.
$7 each - $6 (10+), $5 (100+), $3.75 (250+)
 
$39 each

Current Transformer
200 : 5 Amp Ratio

(TM) 5103
Electromagnetic Industries Model 51. 50 - 400 Hz, 5 phase. 1-7/16" diameter center hole. 1-3/16" deep x 3-3/4" wide x 4-1/4" high. P/N: 864362. NSN: 5950-00-250-6949.
 

Current Transformer
75 Amps

(TM) TRA-TQD901
Hical high power current transformer. Surface mount. 1-1/4"L x 7/8"W x 5/16"H. We do not have specs but calculate the max current to be 75 amps.
$50 each
 
$5 each - $4.25 (10+), $3.75 (100+)

Current Transformer
208 Amps

(TM) B52-1220-1
Electromagnetic Industries. 208 : 1.33 ratio. 5 va @ 60 Hz, 12.5 va @ 400 Hz, all at 1 turn primary. 4-1/4" outside diameter, 1-3/8" inside diameter, 1-1/4" thick. Mfg. P/N: 3-000-004.
 

Current Transformer
1500 : 5 Amp Ratio

(TM) W2-152
Square D 25 - 400 Hz, 10kv, current transformer has 5 amp output for 1500 amp load with 1 primary turn. 6-3/4" outside diameter, 4-1/4" inside diameter, 1-1/4" thick.
$95 each
 
$395 each

Current Transformer
300 : 5 amp Ratio

(TM) 687X2
General Electric heavy duty core cast in rubber. 300:5 Ratio. 4-1/2" inside diameter. 4-1/2" deep x 8-1/2" wide x 10-1/2" high. Steel mounting base. 600v / 10kv test.
$125 each

(TM) 750X10G8
600 amp, 600:5 Ratio Same physical size as above.
 

Current Transformer
250 : 5 amp Ratio

(TM) SIMPLX100
Simplex 5 va series 100 current transformer. 1-1/8" hole. 250 amp load creates 5 amp signal. 3" square x 1-1/2" wide.
$49 each
 
$225 each
 
 

Current Transformer
600 Amps

(TM) CN-1
BBC ITE current transformer has 5 amp output for 600 amp load @ 12.5 va. Primary has huge 2" square silver plated lugs with 9/16" holes. Maximum dimension: 9" wide x 6" deep x 5-1/2" high.
 

Current Transformer
195 : 5 amp Ratio

(TM) 13206E4532-1
Weston current transformer. 195 : 5 amp ratio, 25 - 800 cps, 5 va @ 60 cps. ASA accuracy @ 60 cps. 0.6B-0.1 / 1.2B-0.2. 3-5/8" square, 1-1/2" I.D. hole. NSN: 5950-00-015-0083.
$125 each
 
$75 each

Current Transformer
800 : 5 Amp Ratio

(TM) 7SFT801
Instrument Transformers Inc. 50-400 Hz current transformer has 5 amp output for 800 amp load with 1 primary turn. 600v. Ins. Class 10kv. 2-1/2" diameter center hole. 1" deep x 4-1/2" wide x 5-1/4" high. NSN: 5905-01-248-1448.
 

Current Transformer
900 : 5 amp Ratio

(TM) 7SFT901
Instrument Transformers Inc. 50 - 400 Hz current transformer has 5 amp output for 900 amp load with 1 primary turn. 2-1/2" diameter center hole. 1" deep x 4-1/4" wide x 5-1/4" high.
$65 each
 
$65 each

Current Transformer
23,000 : 1 Amp Ratio

(TM) K5546
Keytronics 115 amps primary current generates 0.005 amps in the coil. 3-1/4" high, 1-1/8" diameter center hole, 1" deep coil, 2-1/4" wide at the base.
 

Current Transformer
3 Phase / 156 : 2 Amp Ratio

(TM) 33-156-2
50 - 400 Hz current transformer has two amp output for 156 amp load. 1" diameter center holes. 1" deep x 3-1/4" wide x 7" high. Each phase terminated at top.
$50 each
 
$165 each

Current Transformer
Max Line Voltage: 2500v

(MTR) 461-12160
Weston current transformer. Primary: 1 turn 800:5 ratio, 2 turns 400:5 ratio, 4 turns 200:5 ratio. Max line voltage: 2500v. Max va: 15 amps. 25 - 500 cps. 6" x 8" x 2-3/4"W. 1-5/8" inside hole diameter. Used, good condition. Checks out ok.
 

Current Transformer
Max Line Voltage: 2500v

(MTR) TR-2A
Sensitive Research current transformer. Same specs as (MTR) 461-12160 (left). Used, good condition except cracked case near secondary terminals. Possible burn (see above photo). Checks out ok. Sold as-is.
$325 each
 
$195 each

Current Transformer
2500v max

(MTR) 327-5666
Weston portable, adjustable current transformer. 2500v max. 1 turn: 1200/5, 2 turn: 600/5, 3 turn: 400/5, 4 turn: 300/5, 6 turn: 200/5. 25 va. 2-13/16" inside hole diameter. 6" x 8" x 2-3/4". Mint condition.
 

Current Transformer
2, 5, 10, 20, 20, 100, or 200 Amps

 
(MTR) 539-4306
Weston portable, adjustable current transformer. 25 - 400 Hz. 2 va. Up to 750 line volts. 1-5/8" inside hole diameter. 4" deep x 1-7/8" wide x 5-1/2" high.
$325 each
 
$85 each

Current Transformer
100 Amps

(MTR) MC15-C71-1346-120
I-T-E Circuit Breaker. 100:5 ratio produces 5 amps secondary for one turn 100 amp primary. 15kv / 95kv imp. level. 2" inside diameter. 7-1/4" deep x 7" diameter x 10-1/4" high.
 

Current Relay
50 Amps

(KO) 1226
Current control relay opens single 75 amp 30 vdc contact when 50 amps is drawn through coil. 50 vdc, 1 ohm coil. Just place this shunt relay in series with load.
$325 each
 
$19 each

 

Current Transformer
2-1/2 VA

(TM) A6301
An AC current flowing through the 15/16" center hole creates a monitor current in the transformer, limited to 2.5 va.
 
 
$45 each
 

For More Information
E-mail: grinnell@surplussales.com

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