Series NTD/NTA
10-25Amp • 120/240 Vac • AC OUTPUT
The Series NTD is available featuring
zero-voltage or random switching and a
broadened operating range (24-
280Vac). This wide range permits opti-
mum performance at both 120Vac and
240Vac line voltages.
Manufactured in Crydom’s ISO 9001
Certified facility for optimum product
performance and reliability.
• Panel Mount
• Zero Voltage or Random
Turn-On Switching
• Wide Control Voltage
Range
• DC Control, AC Control
DC Control (NTD)
NTD2410
AC Control (NTA) 6
1
NTD2405
24-280
0.15-5
600
NTD2425
24-280
0.15-25
600
NTA2410
24-280
0.15-10
600
NTA2425
24-280
0.15-25
600
OUTPUT SPECIFICATIONS
Operating Voltage (47-63 Hz) [Vrms]
Load Current Range 3 [Arms]
Transient Overvoltage [Vpk]
24-280
0.15-10
600
Max. Surge Current, (16.6ms) [Apk]
40
120
250
120
250
Max. On-State Voltage Drop @ Rated Current [Vpk]
1.6
1.6
1.6
1.6
1.6
Thermal Resistance Junction to Case (R
2
) [°C/W]
4.5
1.48
1.02
1.48
1.02
θJC
2
Maximum I t for Fusing, (8.3 msec.) [A sec]
Max. Off-State Leakage Current @ Rated Voltage [mA]
Min. Off-State dv/dt @ Max. Rated Voltage [V/µsec] 2
Max. Turn-On Time 4
7.0
60
260
60
260
.01
10
10
10
10
200
200
200
200
200
1/2 Cycle
1/2 Cycle
0.5
1/2 Cycle
1/2 Cycle
0.5
1/2 Cycle
1/2 Cycle
0.5
10 ms
40 ms
0.5
10 ms
40 ms
0.5
Max. Turn-Off Time
Power Factor (Min.) with Max. Load
INPUT SPECIFICATIONS 1
Control Voltage Range
4-15 Vdc
4.0 Vdc
3-32 Vdc
3.0 Vdc
3-32 Vdc
3.0 Vdc
90-140 Vrms
90 Vrms
90-140 Vrms
90 Vrms
Max. Turn-On Voltage
Min. Turn-Off Voltage
1.0 Vdc
1.0 Vdc
1.0 Vdc
10 Vrms
10 Vrms
Nominal Input Impedance
300 ohms
13 mAdc
See note 5
10 mAdc
See note 5
10 mAdc
10.6 kOhm
10 mArms
10.6 kOhm
10 mArms
Typical Input Current @ 5 Vdc (@ 120 Vrms for NTA)
© 2007 CRYDOM Inc., Specifications subject to change without notice.
G E N E R A L N O T E S
1 All parameters at 25°C unless otherwise specified.
2 Off-State dv/dt test method per EIA/NARM standard RS-443, paragraph 13.11.1
3 Heat sinking required, for derating curves see page 2.
4 Turn-On time for random turn-on versions is 0.02 msec. (DC control models)
5 Input circuitry incorporates active current limiter.
6 24 Vac Control Version Available (use suffix E)
For recommended applications and more information contact:
USA: Sales Support (877) 502-5500 Tech Support (877) 702-7700 FAX (619) 710-8540
Crydom Inc., 2320 Paseo de las Americas, Ste. 201, San Diego, CA 92154
Email: sales@crydom.com WEB SITE: http://www.crydom.com
UK: +44 (0)1202 606030 • FAX +44 (0)1202 606035 Crydom SSR Ltd., Arena Business Centre,
Holyrood Close, Poole, Dorset BH17 7FJ, Email: intsales@crydom.com.
GERMANY: +49 (0)180 3000 506
SERIES NTD/NTA
Rev. 052307
PAGE 1 OF 2