Interpact INS800 4P 800A Disconnect Switch

The Schneider Electric Interpact INS800 31331 switch disconnector is a high-current switching and isolation device designed for low-voltage electrical installations. It features 4 poles and a rated operational current of 800 A, supports voltages up to 690 V AC, and is equipped with a black front rotary handle for clear and safe opening and closing operations.

Reference 31331 belongs to Schneider Electric’s ComPacT INS family and is especially suitable for low-voltage main switchboards, industrial power distribution, tertiary buildings, and installations where high-power circuit isolation is required. This is a non-automatic switch disconnector, so its main function is circuit switching and isolation, and it must be coordinated with the appropriate overcurrent protection devices.

4-pole, 800 A switch disconnector

The Schneider Electric INS800 has a 4-pole configuration, allowing simultaneous disconnection of the four conductors in the circuit. Its conventional thermal current is 800 A at 60 °C, providing a robust solution for high-current installations.

• Number of poles: 4P.
• Rated current: 800 A.
• Conventional thermal current Ith: 800 A at 60 °C.
• Product type: switch disconnector.
• Network type: AC and DC.
• Frequency: 50/60 Hz in AC.

Up to 690 V in AC

The switch disconnector supports a rated operational voltage of up to 690 V AC at 50/60 Hz. Schneider Electric specifies an operational current of 800 A in AC-21A, AC-22A and AC-23A categories for voltages from 220/240 V to 660/690 V AC.

It can also be used in DC installations within the configurations specified by the manufacturer, reaching up to 250 V DC using the four poles in series.

• Rated operational voltage Ue: up to 690 V AC.
• DC operational voltage: up to 250 V DC with 4 poles in series.
• Rated insulation voltage Ui: 1,000 V AC.
• Rated impulse withstand voltage Uimp: 12 kV.

Utilization categories AC-21A, AC-22A and AC-23A

Reference 31331 is designed for different utilization categories according to IEC 60947-3, offering flexibility for various load types:

• AC-21A: switching of resistive and slightly inductive loads.
• AC-22A: switching of mixed resistive and inductive loads.
• AC-23A: switching of motors and other highly inductive loads.
• DC-21A, DC-22A and DC-23A: equivalent DC applications within the permitted configurations.

In AC-23 category, Schneider Electric specifies a maximum power of 400 kW at 380/400 V, 500 kW at 415 V, 560 kW at 500/525 V, and up to 710 kW at 660/690 V.

Isolation with positive contact indication

The ComPacT INS800 is designed to perform isolation functions in accordance with IEC 60947-1 and IEC 60947-3. It features positive contact position indication, making it easy to verify whether the device is open or closed.

This feature is especially important during maintenance operations, machine intervention, or work on electrical panels where a clearly identifiable isolation point is required.

• Suitability for isolation: yes.
• Contact position indicator: yes.
• Visible break: no.

Black front rotary handle

Reference 31331 corresponds to the standard version equipped with a black front rotary handle. This handle allows manual opening and closing operations and provides a clear visual indication of the switch position.

Direct actuation provides simple operation from the front of the electrical panel and is designed to withstand the demands of professional high-current installations.

High short-circuit making capacity

The INS800 offers a high rated short-circuit making capacity Icm. Schneider Electric specifies a value of 75 kA at 690 V AC for the switch disconnector alone.

When coordinated with a suitable upstream circuit breaker, the short-circuit making capacity can reach 330 kA at 690 V AC, according to the coordination conditions specified by the manufacturer.

• Icm of the switch disconnector: 75 kA at 690 V AC.
• Icm with upstream circuit breaker: up to 330 kA at 690 V AC.

High short-time withstand capability

The switch is designed to withstand high currents for short periods of time. Its rated short-time withstand current Icw varies depending on the application time:

• 50 kA for 0.5 seconds.
• 42 kA for 0.8 seconds.
• 35 kA for 1 second.
• 20 kA for 3 seconds.
• 10 kA for 20 seconds.
• 8 kA for 30 seconds.

These values are established in accordance with IEC 60947-3 and allow the disconnector to be coordinated with upstream protection devices in the installation.

Continuous operation

The Schneider Electric INS800 is designed for continuous rated service, so it can remain carrying the assigned current for extended periods within its rated installation conditions.

It also has an intermittent service class of 120 - 60%, according to Schneider Electric’s declared technical characteristics.

Fixed mounting on plate or compatible support

Reference 31331 is a fixed-mount device that can be installed on a plate or compatible support inside distribution switchboards. The incoming and outgoing connections are made from the front, making it easier to organize conductors and power busbars.

• Mounting type: fixed.
• Support: plate or compatible system.
• Top connection: front.
• Bottom connection: front.
• Connection pitch: 70 mm.

Dimensions of the Schneider Electric INS800

Due to its 800 A capacity, the switch has a format designed for high-current power and distribution panels.

• Height: 300 mm.
• Width: 410 mm.
• Depth: 146.5 mm.
• Net weight: approximately 18 kg.

Durability for professional installations

The ComPacT INS800 is designed to withstand the usual operations of a power switch disconnector. Schneider Electric specifies a mechanical durability of 3,000 cycles.

The electrical durability indicated for AC-21A, AC-22A, AC-23A utilization categories and the corresponding DC categories reaches 500 cycles within the specified voltages and conditions.

• Mechanical durability: 3,000 cycles.
• Electrical durability: 500 cycles depending on category and operational voltage.

Protection and environmental conditions

The Schneider Electric 31331 has an IP40 protection rating according to IEC 60529 and an IK07 mechanical resistance rating according to EN 50102. It is designed to operate over a wide ambient temperature range.

• Protection rating: IP40.
• Mechanical resistance: IK07.
• Pollution degree: 3.
• Operating temperature: from -25 °C to 70 °C.
• Storage temperature: from -50 °C to 85 °C.

Applicable standards

The ComPacT INS800 switch disconnector is designed in accordance with the international standards applicable to low-voltage switching and isolation equipment:

• IEC 60947-1.
• IEC 60947-3.

Its front design also offers an insulation level of class II in accordance with IEC 60664.

Technical characteristics of Schneider Electric 31331

• Brand: Schneider Electric.
• Range: ComPacT.
• Series: ComPacT INS / Interpact INS.
• Model: INS800.
• Reference: 31331.
• Type: switch disconnector.
• Number of poles: 4P.
• Rated current: 800 A.
• Conventional thermal current: 800 A at 60 °C.
• Rated operational voltage: up to 690 V AC / 250 V DC.
• Frequency: 50/60 Hz.
• AC utilization categories: AC-21A, AC-22A and AC-23A.
• DC utilization categories: DC-21A, DC-22A and DC-23A.
• Insulation voltage Ui: 1,000 V.
• Rated impulse withstand voltage Uimp: 12 kV.
• Short-circuit making capacity Icm: 75 kA without specific upstream protection.
• Coordinated Icm: up to 330 kA with upstream circuit breaker.
• Icw: up to 35 kA for 1 second.
• Suitability for isolation: yes.
• Contact position indicator: yes.
• Operating mechanism: direct front rotary handle.
• Handle color: black.
• Mounting type: fixed.
• Dimensions: 410 x 300 x 146.5 mm.
• Net weight: 18 kg.
• Mechanical durability: 3,000 cycles.
• Protection rating: IP40.
• Mechanical resistance: IK07.
• Standards: IEC 60947-1 and IEC 60947-3.
• EAN: 3303430313311.

High-current isolation for power panels

The Schneider Electric Interpact INS800 4P 800 A is a robust solution for switching and isolating high-current circuits. Its 4 poles, 800 A capacity, operating voltage up to 690 V AC, and high short-circuit withstand capability make it suitable for low-voltage main switchboards, industrial installations, and high-power electrical distribution systems.

Its black front rotary handle, positive contact position indication, and suitability for isolation make operation and maintenance easier. As a non-automatic switch disconnector, it must be installed together with the appropriate overload and short-circuit protection for each installation.