NTD / NTA Series
• Ratings from 10A to 25A @ 24-280 VAC
• SCR output for heavy industrial loads
• AC or DC control
• Zero-crossing (resistive loads) or random-fire (inductive loads) output
PRODUCT SELECTION
Control Voltage
3-32 VDC
90-140 Vrms
18-36 Vrms
AVAILABLE OPTIONS
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OUTPUT SPECIFICATIONS (1)
Description
10A
Operating Voltage (47-63Hz) [Vrms]
Transient Overvoltage [Vpk]
Maximum Off-State Leakage Current @ Rated Voltage [mArms]
Minimum Off-State dv/dt @ Maximum Rated Voltage [V/µsec] (2)
Maximum Load Current (3) [Arms]
Minimum Load Current [Arms]
Maximum Surge Current (16.6ms) [Apk]
Maximum On-State Voltage Drop @ Rated Current [Vpk]
Thermal Resistance Junction to Case (Rjc) [°C/W]
Maximum I
2
t for Fusing (8.3 msec) [A
2
sec]
Minimum Power Factor (with Maximum Load)
0.5
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10A
25A
NTD2410
NTA2410
NTA2410E
NTD2425
NTA2425
NTA2425E
25A
24-280
600
10
200
25
0.15
250
1.6
1.02
260
0.5
24-280
600
10
200
10
0.15
120
1.6
1.48
60
INPUT SPECIFICATIONS (1)
Description
Control Voltage Range
Maximum Turn-On Voltage
Minimum Turn-Off Voltage
Typical Input Current Range @ 5 VDC ( @ 120 Vrms for NTA)
Nominal Input Impedance
Maximum Turn-On Time [msec] (4)
Maximum Turn-Off Time [msec]
NTD24xx
3-32 VDC
3.0 VDC
1.0 VDC
10 mADC
See note(5)
1/2 Cycle
1/2 Cycle
NTA24xx
90-140 Vrms
90 Vrms
10 Vrms
10 mADC
10.6 Ohm
10
40
NTA24xxE
18-36 Vrms
18 Vrms
4.0 Vrms
3 mA @ 24 Vrms
9.0 Ohm
10
40
GENERAL SPECIFICATIONS
Description
Dielectric Strength, Input/Output/Base (50/60Hz)
Minimum Insulation Resistance (@ 500 V DC)
Maximum Capacitance, Input/Output
Ambient Operating Temperature Range
Ambient Storage Temperature Range
Weight (typical)
Encapsulation
Terminals
Recommended Terminal Screw Torque Range:
GENERAL NOTES
1)
2)
3)
4)
5)
6)
All parameters at 25°C unless otherwise specified.
Off-State dv/dt test method per EIA/NARM standard RS-443, paragraph 13.11.1
Heat sinking required, for derating curves see page 2.
Turn-on time for Random turn-on versions is 0.02 msec (DC Control Models)
Input circuitry incorporates active current limiter.
24 VAC Control Version Available (use suffix E)
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Parameters
3750 Vrms
10
9
Ohm
8 pF
-40 to 80 °C
-40 to 125 °C
3.0 oz (86.5 g)
Thermally conductive Epoxy
Screw and saddle Clamps Furnished, Unmounted
6-32 Screws - 10 in/lbs. 8-32 & 10-32 Screws - 20 in. lbs. (Screws dry without grease)
MECHANICAL SPECIFICATIONS
Terminal Hardware Furnished:
4 Screws and 4 Saddle Clamps
THERMAL DERATE INFORMATION
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AGENCY APPROVALS
UL/cUL E116950
CSA LR81689
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Rev. 082310
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