GD040AT4 - DC SWITCH 40A 1000V DC21B DIRECT HANDLE

GD040AT4 – DC SWITCH 40A 1000V DC21B DIRECT HANDLE

Engineered for safe DC isolation in solar systems, the Lovato GD040AT4 switch disconnector delivers reliable performance in photovoltaic applications.

SKU: GD040AT4
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Manufacturer Lead Time

£250.57

Why Choose the GD040AT4?

Engineered for safe DC isolation in solar systems, the Lovato GD040AT4 switch disconnector delivers reliable performance in photovoltaic applications. This direct-operating, 2‑pole unit comes complete with a black handle and supports up to 1500 V DC with Ui 1500 V and Uimp 8 kV. Rated 40 A at 1000 VDC, 32 A at 1200 VDC, and 25 A at 1500 VDC, GD040AT4 ensures dependable disconnection.

Flexible mounting on 35 mm DIN rail or screw-on plate simplifies installation in enclosures. With IP20 frontal protection, 10,000 mechanical cycles, and operation from −25 to +55 °C up to 3000 m altitude, it is built for demanding sites. Screw terminals accept 1–10 mm² conductors with 1.2–1.6 Nm tightening torque for secure, low-loss DC connections.

Key Benefits

  • Purpose-designed DC isolator for photovoltaic applications.
  • Direct-operating mechanism with black handle for clear, safe switching.
  • 2-pole isolation up to 1500 V DC, Ui 1500 V.
  • Proven durability with 10,000 mechanical life cycles.
  • Flexible screw-plate or 35 mm DIN rail mounting.
  • Frontal IP20 protection for safer panel integration.
  • Wide −25 to +55 °C operating temperature range.
  • Defined DC ratings: 40A/1000V, 32A/1200V, 25A/1500V.

What’s Included

  • GD040AT4 switch disconnector main unit
  • Factory-fitted black direct-operating handle
  • Mounting and wiring instructions
  • Manufacturer datasheet (downloadable)

Applications

  • PV array string isolation in combiner or junction boxes
  • DC isolator on the photovoltaic inverter DC side
  • Rooftop or ground-mount solar DC distribution enclosures
  • Maintenance and emergency DC disconnection in PV systems

Technical Specifications

HS Code 85365080
Product type designation GD
Number of poles 2
Operating voltage type DC
Ith (IEC) 40 A
Rated insulation voltage Ui (IEC/EN) 1500 V
Rated impulse withstand voltage Uimp 8 kV
Power dissipation per pole (max) 1.9 W
Mechanical life 10000 cycles
Terminal tightening torque 1.2 to 1.6 Nm
Conductor section (IEC) 1 to 10 mm²
Operating temperature -25 to +55 °C
Storage temperature -40 to +70 °C
Max altitude 3000 m
IP degree (frontal) IP20

Frequently Asked Questions

What DC ratings does the GD040AT4 offer for PV systems?
It is rated 40 A at 1000 VDC, 32 A at 1200 VDC, and 25 A at 1500 VDC.
How can this switch disconnector be mounted?
It mounts by screw on a plate or on a 35 mm DIN rail.
What conductor sizes and torque are supported?
Terminals accept 1–10 mm² conductors with 1.2–1.6 Nm tightening torque.
What are the environmental and protection ratings?
It has IP20 frontal protection and operates from −25 to +55 °C up to 3000 m.
Which standards does the GD040AT4 conform to?
It conforms to IEC/EN 60947-3 and IEC/EN 60947-1.

Safety note: Install and commission by a qualified electrician. Verify the DC voltage and current ratings for the application, and always isolate the supply before maintenance in accordance with the manufacturer’s instructions and relevant standards.

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