NTD / NTA Series
• Ra ting s fro m 1 0A to 2 5A @ 2 4-2 8 0 VAC
• S C R out put fo r heavy industr i al l oads
• A C or D C control
• Zero-crossing (resistive loads) or random-fire (i nductive loads) output
PRODUCT SELECTION
Control Voltage 10A 25A
3-32 VDC NTD2410 NTD2425
90-140 Vrms NTA2410 NTA2425
18-36 Vrms NTA2410E NTA2425E
AVAILABLE OPTIONS
OUTPUT SPECIFICATIONS (1)
Description 10A 25A
Operating Voltage (47-63Hz) [Vrms] 24-280 24-280
Transient Overvoltage [Vpk] 600 600
Maximum Off-State Leakage Current @ Rated Voltage [mArms] 10 10
Minimum Off-State dv/dt @ Maximum Rated Voltage [V/µsec] (2) 200 200
Maximum Load Current (3) [Arms] 10 25
Minimum Load Current [Arms] 0.15 0.15
Maximum Surge Current (16.6ms) [Apk] 120 250
Maximum On-State Voltage Drop @ Rated Current [Vpk] 1.6 1.6
Thermal Resistance Junction to Case (Rjc ) [°C/W] 1.48 1.02
Maximum I2 t for Fusing (8.3 msec) [A2 sec] 60 260
Minimum Power Factor (with Maximum Load) 0.5 0.5
Obsolete
INPUT SPECIFICATIONS (1)
Description NTD24xx NTA24xx NTA24xxE
Control Voltage Range 3-32 VDC 9 0-140 Vrms 18-36 Vrms
Maximum Turn-On Voltage 3.0 VDC 90 Vrms 18 Vr ms
Minimum T u rn-Off Voltage 1.0 VDC 10 Vrms 4.0 Vrms
Typical Input Current Range @ 5 VDC ( @ 120 Vrms for NTA) 10 mADC 10 mADC 3 mA @ 24 Vrms
Nominal Input Impedance See note(5) 10.6 Ohm 9.0 Ohm
Maximum Turn-On Time [msec] (4) 1/2 Cycle 10 10
Maximum Turn-Off Time [msec] 1/2 Cycle 40 40
GENERAL SPECIFICATIONS
Description Parameters
Dielectric Strength, Input/Output/Base (50/60Hz) 3750 Vrms
Minimum Insulation Resistance (@ 500 V DC) 109 Ohm
Maximum Capacitance, Input/Output 8 pF
Ambient Operating Temperature Range -40 to 80 °C
Ambient Storage Temperature Range -40 to 125 °C
Weight (typical) 3.0 oz (86.5 g)
Encapsulation Thermally conductive Epoxy
Terminals Screw and saddle Clamps Furnished, Unmounted
Recommended Terminal Screw Torque Range: 6-32 Screws - 10 in/lbs. 8-32 & 10-32 Screws - 20 in. lbs. (Screws dry without grease)
GENERAL NOTES
1) All parameter s 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)
Obsolete
MECHANICAL SPECIFICATIONS
Terminal Hardware Fur ni shed:
4 Screws and 4 Saddle Clam
p
s
THERMAL DERATE INFORMATION
AGENCY APPROVALS
UL/cUL E116950
C SA LR 81689
R ev. 082310
Obsolete
Obsolete
ANNEX - ENVIROMENTAL INFORMATION
Obsolete
