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Schneider Electric SSP3A250BDT

Schneider SSP3A250BDT 3-Phase SSR, 50 A, 660 VAC

MPNSSP3A250BDT
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Schneider Electric Harmony SSP3A250BDT, 3-phase solid state relay, 0.4...50 A, 42...660 VAC, zero-voltage switching, panel mount.

$97.79 – $166.00Ref. price · indicative, final on quote
Schneider Electric SSP3A250BDT datasheet (PDF)
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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

SSP3A250BDT key specifications
ParameterValue
Range of productHarmony Solid State Relays
Co-ordination typeTVS
Solid state output typeZero voltage switching
Product or component typePanel mount relay
Output voltage42...660 V AC
Maximum voltage drop= 1000 MOhm at 500 V DC
Maximum switching voltage1 V DC turn-off
Minimum switching voltage4 V DC turn-on
Coil voltage4...32 V DC
[Uimp] rated impulse withstand voltage0.8 kV for input to case 6 kV for input/output circuit 6 kV for input/output to case
Load current0.4...50 A
Input current15...35 mA

All specifications

SSP3A250BDT additional specifications
ParameterValue
Surge current715 A 20 ms 750 A 16.6 ms
Line rated current50 A
Maximum leakage current3 mA off-state
Phases3 phase
IP degree of protectionIP20
Mounting supportPanel
Connections - terminalsScrew terminals 1 x 0.2...1 x 2.5 mm², AWG 24...AWG 14) input Screw terminals 1 x 1.5...1 x 10 mm², AWG 16...AWG 8) output
Response time8.33 ms (turn-on) 8.33 ms (turn-off)
Pollution degree2
Depth1.6 in (41 mm)
Width4.09 in (104 mm)
Height2.9 in (74.6 mm)
StandardsIEC/EN 62314 IEC/EN 60947-4-2 IEC/EN 60947-4-3 UL 60947-4-2 C22.2 No. 14
MarkingCE
CategoryUS10CP222375
Test buttonWithout test button
LED indicatorLED, green input
Flame retardanceV0 conforming to UL 94
Device short nameSSP
Tightening torque1.2 N.m for input 2.5 N.m for output
Provided accessoryThermal pad
Thermal resistance0.15 °C/W
Device presentationComplete product
Dielectric strength4 kV AC for input/output 4 kV AC for input or output to case
Maximum capacitance8 pF for input/output
Overvoltage categoryIII
Output switching modeZero voltage switching
Transient overvoltage1200 V
Maximum i2t for fusing2520 A².s for 10 ms at 50 Hz 2320 A².s for 8.3 ms at 60 Hz
Electromagnetic compatibilityElectrostatic discharge 4 kV criteria B contact discharge conforming to IEC 61000-4-2 Electrostatic discharge 8 kV criteria B air discharge conforming to IEC 61000-4-2 Conducted RF disturbances 10 V, 0.15...80 MHz criteria A conforming to IEC 61000-4-6 Radiated radio-frequency electromagnetic field immunity test 10 V/m, 80 MHz...1 GHz criteria A conforming to IEC 61000-4-3 Surge immunity test 1 kV criteria B output ports line to line conforming to IEC 61000-4-5 Surge immunity test 2 kV criteria B output ports line to earth conforming to IEC 61000-4-5 Surge immunity test 1 kV criteria B input ports line to earth conforming to IEC 61000-4-5 Electrical fast transient/burst immunity test 2 kV, 5kHz criteria B output ports conforming to IEC 61000-4-4 Immunity to voltage dips 0 %/20 ms criteria B conforming to IEC 61000-4-11 Immunity to voltage dips 40 %/200 ms criteria C conforming to IEC 61000-4-11 Immunity to voltage dips 70 %/500 ms criteria C conforming to IEC 61000-4-11 Immunity to short interruption 0 %/5 s criteria C conforming to IEC 61000-4-11 Electrical fast transient/burst immunity test 1 kV, 5kHz criteria B input ports conforming to IEC 61000-4-4 Radiated radio-frequency electromagnetic field immunity test 3 V/m, 1.4...6 GHz criteria A conforming to IEC 61000-4-3 Radiated emission 30...1000 Mhz environment A conforming to IEC 60947-1 Conducted emission 0.15...30 Mhz environment A conforming to IEC 60947-1
Ambient air temperature for storage-40...257 °F (-40...125 °C)
Ambient air temperature for operation-40...176 °F (-40...80 °C)

Product details

The Schneider Electric Harmony SSP3A250BDT is a 3-phase solid state relay rated for 0.4 to 50 A load current and 42 to 660 VAC output, with zero-voltage switching to minimize inrush on turn-on. Response time is fixed at 8.33 ms on both turn-on and turn-off, so it switches at the zero-cross of the AC waveform — no half-cycle inrush to blow your heater or contactor coil. Surge current rating of 715 A for 20 ms handles motor starting and transformer inrush without losing the SCR.

Mounting and thermal

Panel mount only — no DIN rail clip. A thermal pad is included, so you don't need to source separate interface material. Thermal resistance is 0.15 °C/W, so plan your heatsink accordingly for 50 A continuous. Torque the input terminals to 1.2 N·m and output terminals to 2.5 N·m. Input accepts up to 2.5 mm², output up to 10 mm².

It carries a CE mark and complies with IEC/EN 62314, IEC/EN 60947-4-2, IEC/EN 60947-4-3, UL 60947-4-2, and CSA C22.2 No. 14. Pollution degree 2, overvoltage category III, IP20 finger-safe enclosure, and V0 flame retardance per UL 94. Dielectric strength is 4 kV AC between input and output, and 4 kV AC from either to case. Off-state leakage is under 3 mA.

Frequently asked questions

What is its depth?

Depth is 1.6 in (41 mm).

What is its width?

Width is 4.09 in (104 mm).

What compliance documentation does it have?

It is CE marked and complies with IEC/EN 62314, IEC/EN 60947-4-2, IEC/EN 60947-4-3, UL 60947-4-2, CSA C22.2 No. 14. Rated IP20, pollution degree 2, overvoltage category III, and V0 flame retardance.

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SSP3A250BDT