Datasheet

ManualsBrandsSensata Crydom ManualsRelaysSolid State Relay LN, 25A, 280V, Screw Terminal

Page 1

www.sensata.com

| LN SERIES

AC OUTPUT LOW NOISE SOLID STATE RELAYS

SPECIFICATIONS

Features

Applications

Output Voltage

(1)

• Rating up to 75A @48-528 VAC per channel

• Zero Voltage Turn-On Switching

• Conformance with IEC60947-4-3 Environment B for low voltage domestic,

commercial and light industrial locations/installations

• Patented Low Noise trigger circuit

• IP20 touch-safe housing is available

• Built-in Input/Output over-voltage protection

• LED Input Status Indicator

• 3500 VAC Optical isolation

• EMC Compliant to level III

• Commercial ovens

• Professional cooking equipment

• Household appliances

• Medical equipment

Output Voltage 25 A 50 A 75 A

24-280 VAC

LND2425 LND2450 LND2475

48-528 VAC

LND4425 LND4450 LND4475

Description LND24XX LND44XX

Operating Voltage (47-63Hz) [V

RMS

]

24-280 48-528

Transient Overvoltage [Vpk]

(2)

500 800

Maximum Off-State Leakage Current @

Rated Voltage [mA

RMS

]

1 1

Zero Crossing Level Maximum [Vpk]

Minimum Off-State dV/dt @ Maximum

Rated Voltage [V/μsec]

500

PRODUCT SELECTION

The LN Series of panel mounted Solid State Relays offer reliable back-to-back SCR switching up to 75 Amps at 528 VAC, coupled with a patented trigger circuit

design which allows the SSR to switch resistive loads with minimal electromagnetic noise generated, ideal for use in commercial, residential and medical

applications.

UL recognized and TUV certified, the LN series offers superior performance in applications that demand reliable switching and low emitted noise.

LOW

NOISE

Summary of content (9 pages)

PAGE 1
| LN SERIES AC OUTPUT LOW NOISE SOLID STATE RELAYS The LN Series of panel mounted Solid State Relays offer reliable back-to-back SCR switching up to 75 Amps at 528 VAC, coupled with a patented trigger circuit design which allows the SSR to switch resistive loads with minimal electromagnetic noise generated, ideal for use in commercial, residential and medical applications.
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Output (1) Description LNDXX25 LNDXX50 LNDXX75 25 50 75 Load Current, LC A IEC62314 @ Ue=480VAC, 40°C [ARMS] (3) Minimum Load Current [mARMS] 100 Maximum 1 Cycle Surge Current (50/60Hz) [Apk] 239/250 597/625 1145/1200 1 Second surge current (Apk. Ta=25°C) 50/60 Hz 85 150 225 Maximum On-State Voltage Drop @ Rated Current [Vrms] 1.3 1.25 1.15 Maximum 1/2 Cycle I² t for Fusing (50/60Hz) [A² sec] 285/259 1770/1621 6560/5976 Thermal Resistance Junction to Case (Rjc) [°C/W] 0.8 0.45 0.
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Housing Material UL94 V-0 Baseplate Material Aluminum Input Terminal Screw Torque Range [lb-in/ Nm] 13-15/1.5-1.7 Load Terminal Screw Torque Range [lb-in/ Nm] 18-20/2-2.2 SSR Mounting Screw Torque Range [lb-in/ Nm] 18-20/2-2.3 Humidity per IEC60068-2-78 93% non-condensing LED Input Status Indicator Green Overvoltage Category III Impulse Withstand Voltage according to IEC 60664-1 6kV THERMAL DERATE INFORMATION LNDxx25xx 1˚C/W 1.5˚C/W LNDxx50xx 0.5˚C/W 3˚C/W 2˚C/W LNDxx75xx 1.5˚C/W 0.
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EQUIVALENT CIRCUIT BLOCK AND WIRING DIAGRAMS DC Control (7) +3 OUTPUT DC V - INPUT + 1 Trigger Circuit 2 -4 Current Limiter Load A V AC B Load Load can be wired in position A or B SURGE CURRENT INFORMATION LNDxx50xx Surge Current (Amp) AC Peak Surge Current (Amp) AC Peak LNDxx25xx 300 250 200 150 100 50 0 0.01 0.11 700 600 500 400 300 200 100 0 0.01 10 0.
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CONDUCTED RADIOFREQUENCY EMISSION TEST LND2450 80.00 70.00 60.00 50.00 dBuV 40.00 30.00 20.00 10.00 0.00 -10.00 -20.00 0.1501 0.1501.500 15.000 MHz GENERAL NOTES All parameters at 25°C unless otherwise specified. Output will self trigger beyond 450-600 Vpk for LND24XX or 900-1200 Vpk for LND44XX models, not suitable for capacitive loads. (3) Heat sinking required, see derating curves. (4) Increase minimum voltage by 1 V for operations from -20 to -40°C. (5) No freezing or condensation allowed.
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Recommended Torque and Wire Sizes Max. Screw Torque [lb-in (Nm)] Terminal Output 18-20 (2.0-2.2) Input 13-15 (1.5-1.7) Wire Size (Solid / Stranded) Wire Pull-Out Strength (lb)[N] 20 AWG (0.75 mm2) [minimum] 25 [111] 2 x 10 AWG (6 mm2) 80 [355] 2 x 8 AWG (10 mm2) [maximum] 90 [400] 28 AWG (0.09 mm2) [minimum] 2.2 [9.8] 2 x 12 AWG (4 mm2) [maximum] 22 [98] fig. 1 SSR mounted on HS053 heat sink MECHANICAL SPECIFICATIONS 1 .10 27.9 0 .49 12.4 1 .88 47.6 LN SERIES IP20 1 .10 27.
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Example : LND4475CH ORDERING OPTIONS LN - D - 44 - 75 - K - C - H Series LN = Low Noise Solid State Relay Control Voltage D = 4.
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AGENCY APPROVALS & CERTIFICATIONS Approvals (Tested and Certified According To) E116950 UL 508 and C22.2 No.14 EN 62314 Conformances Vibration Resistance IEC 60068-2-6 Shock Resistance IEC 60068-2-27 Electromagnetic Interference IEC 60947-4-3 (See Table 1) Amplitude Range: 10-55 Hz, Displacement 0.75mm Peak Acceleration: Conducted Disturbances 15g, Duration CISPR 11 11ms.
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WARNINGS RISK OF MATERIAL DAMAGE AND HOT ENCLOSURE • The product’s side panels may be hot, allow the product to cool before touching • Follow proper mounting instructions including torque values • Do not allow liquids or foreign objects to enter this product Failure to follow these instructions can result in serious injury, or equipment damage.