ABB Switches for photovoltaic applications General Product Line Information

Switches for photovoltaic applications

Up to 1000 VDC

ABB’s switch offering for PV applications

The switch offering includes switch-disconnectors designed
for photovoltaic applications. Switch-disconnectors are
typically used to isolate individual strings or arrays of solar
panels and battery banks. They can also be used as the main
switch for the whole photovoltaic system.

ABB’s switches are compact in size, have high DC voltage
ratings and unique safety features. The range goes from 16 to
630 Amperes.

OTDC16…32 Amperes

OTDC from 16…32 Amperes have various DC voltage ratings
within the same footprint area. Thanks to its modular design
the rated operational voltage can be scaled according to your
needs, up to 1000 V.

Reliable PV systems at a wide voltage range

OTDC switch-disconnectors can be DIN rail or screw
mounted. Tunnel terminals capture fine stranded wires and

2

they are wide enough to allow wires up to 16 mm
circuit bars are pre-installed as standard.

Simple and fast installation

OTDC16…32 is also available in a plastic enclosure, suitable
for outdoor use. Enclosed OTDCP is made of material
resistant to UV light and water exposure. The enclosure

. Short-

has a high degree of protection, IP65. Cover interlock and
padlockable handle ensure safe usage.

OTDC…32 switches, with or without enclosure, meet the
standard’s thermal requirements, even in exceptionally high
operating ambient temperatures. The power losses are very
low, minimizing the waste of energy.

Suitable for warm locations
Maximum energy efficiency of PV systems

OTDC100…250 Amperes

OTDC switches from 100…250 Amperes are the only 2-pole
solution in the market with an operational voltage of 1000
VDC. This is possible thanks to carefully optimized arc plates
and dual magnetic breaking.

Breaking power optimized across the entire current range

As a result of a symmetric design, the connections are
independent of polarity. The switch works in both ways.

Simplicity in installation

OTDC is the only DC switch in the market that has visible
contacts. The operation of the switch is not vulnerable to
voltage peaks and it is independent of the user (quick make­quick brake).

Safe and reliable operation

6 Features | Switches for PV applications