Load Break Switch

Filter

New

DC switch-disconnector, 16…40 A

The SCAME 590.DCGE16–40 A (1 string | 2 string) switch-disconnector is a reliable solution for safe switching and isolation of electrical circuits. It is installed in photovoltaic systems between the solar module and the inverter and enables safe DC isolation. Thanks to its compact design and robust construction, it is equally suitable as a main switch, maintenance switch or safety switch. With its high protection rating IP66/IP69 and impact resistance IK09, it ensures maximum safety even under the toughest conditions. A large wiring space provides more room and enables particularly easy and convenient wiring. The recessed XXL rotary handle with integrated status indicator ensures safe operation and a clear indication of the switching position. The handle can be locked both in the OFF position (up to three padlocks) and in the ON position (one padlock) – for maximum operational safety. The well-designed enclosure features pre-marked drilling points on the top side. Break-out cable entries on the bottom side allow for flexible installation.

from

CHF

75.85

/ 1 pcs

from

CHF

75.85

/ 1 pcs

8 Versions
AC switch-disconnector, 16…160 A, 3P+N

The SCAME 590.GE16–160 A (3P+N) switch-disconnector is a reliable solution for the safe switching and isolation of electrical circuits. Thanks to its compact design and robust construction, it is equally suitable as a main switch, maintenance switch, or safety switch. With a high protection rating of IP66/IP69 and an impact resistance of IK09, it ensures maximum safety even under the harshest conditions. A large wiring space provides additional room for easy and convenient installation. The recessed XXL rotary handle with integrated position indicator ensures safe operation and a clear switching status display. The handle is padlockable in the OFF position (up to three padlocks) as well as in the ON position (one padlock) – ensuring maximum operational safety. The well-designed enclosure features drilling point marks on the top side. Break-through cable entries on the bottom side allow for flexible.

from

CHF

30.75

/ 1 pcs

from

CHF

30.75

/ 1 pcs

8 Versions
AC switch-disconnector, 16…160 A, 3P+N

The SCAME 590.EL16-160 A (3P+N) switch-disconnector is a reliable solution for the safe switching and isolation of electrical circuits. Thanks to its compact design and robust construction, it is equally suitable as a main switch, maintenance switch, or safety switch. With a high protection rating of IP66/IP69 and an impact resistance of IK09, it ensures maximum safety even under the harshest conditions. A large wiring space provides additional room for easy and convenient installation. The recessed XXL rotary handle with integrated position indicator ensures safe operation and a clear switching status display. The handle is padlockable in the OFF position (up to three padlocks) as well as in the ON position (one padlock) – ensuring maximum operational safety. The well-designed enclosure features drilling point marks on the top side. Break-through cable entries on the bottom side allow for flexible installation.

from

CHF

31.00

/ 1 pcs

from

CHF

31.00

/ 1 pcs

8 Versions
AC switch-disconnector, 16…40 A, 3P+N, for emergency use

The SCAME 590.EM16–40 A (3P+N) switch-disconnector is a reliable solution for the safe switching and isolation of electrical circuits. Its compact design and robust construction make it ideal for emergency stop applications. With a high protection rating of IP66/IP69 and an impact resistance of IK09, it ensures maximum safety even under the harshest conditions. A large wiring space provides additional room for easy and convenient installation. The recessed XXL rotary handle with integrated position indicator ensures safe operation and a clear switching status display. The handle is padlockable only in the OFF position (up to three padlocks) – ensuring maximum operational safety. The well-designed enclosure features drilling point marks on the top side. Break-through cable entries on the bottom side allow for flexible installation.

from

CHF

50.40

/ 1 pcs

from

CHF

50.40

/ 1 pcs

2 Versions
AC switch-disconnector, 160…250 A, 3P+N

The SCAME 590.GE 160–250 A (3P+N) switch-disconnector is a reliable solution for the safe switching and isolation of electrical circuits. Thanks to its compact design and robust construction, it is equally suitable as a main switch, maintenance switch, or safety switch. With a protection rating of IP65 and an impact resistance of IK10, it ensures maximum safety even under the harshest conditions. A large wiring space provides additional room for easy and convenient installation. The XXL rotary handle with integrated position indicator ensures safe operation and a clear switching status display. The handle is padlockable in the OFF position (up to three padlocks) as well as in the ON position (one padlock) – ensuring maximum operational safety. The well-designed enclosure features a removable cable gland plate on the bottom side. Easy wall mounting is ensured via external mounting brackets.

from

CHF

308.05

/ 1 pcs

from

CHF

308.05

/ 1 pcs

3 Versions
AC switch-disconnector, 100…1600 A, 3P+N

The SCAME 590.KGE 100–1600 A (3P+N) is a complete range of switch-disconnectors housed in a painted sheet steel enclosure with a hinged door. The wide enclosure design allows wiring of large cross-section cables required for high-power applications and long supply lines. At the same time, the high electrical performance and short-circuit withstand capability ensure maximum safety even under very high current loads. With a protection rating of IP65 and an impact resistance of IK10, it provides maximum safety even under the harshest conditions. A large wiring space offers additional room and enables particularly easy and convenient installation. The handle is padlockable only in the OFF position (up to three padlocks). A cable gland plate with cable entries on the bottom side allows flexible installation.

from

CHF

413.85

/ 1 pcs

from

CHF

413.85

/ 1 pcs

11 Versions

Switch disconnectors for photovoltaic systems

Depending on the system design, a PV installation requires safe isolation on both the DC and AC sides. A DC switch disconnector separates the modules from the inverter. An AC switch disconnector is installed on the grid side.

For three-phase PV systems where the neutral must also be switched, plica deliberately offers 3P+N AC switch disconnectors. The dedicated neutral pole closes before the phases and opens after them.

3P+N AC switch disconnector for photovoltaic systems

3P+N Three phases and neutral

N first ON / N last OFF Neutral closes first · Neutral opens last

16–1600 A Broad AC range

What is the difference between 4P and 3P+N?

Both descriptions refer to a device with four current paths. The function of the fourth pole is what matters.

4P: four equally treated poles

In a general 4P version, all four poles are treated as equivalent switching poles. Without a defined neutral function, the fourth pole is not automatically guaranteed to close first and open last.

L1L2L34P

3P+N

3P+N: three phases plus neutral

With 3P+N, the fourth pole is expressly designed as the neutral pole. The Scame versions used have an early-make and late-break neutral function.

L1L2L3N

Why 3P+N in the PV range?

In a three-phase PV installation with neutral, the defined sequence prevents the phases from being momentarily connected without a neutral. plica therefore uses 3P+N versions for AC switch disconnectors with neutral.

A 3P+N device is technically also four-pole. Some manufacturers therefore state 4P (3P+N). The data sheet must confirm the early-make / late-break neutral function.

Assign AC and DC isolation correctly

DC side

The DC switch disconnector is installed between the PV generator and inverter. It must be rated for the DC voltage, string current and switching concept.

AC side

The AC switch disconnector is installed on the grid side of the inverter. A 3P+N version is used where the neutral must also be switched.

Not interchangeable: An AC switch disconnector must not replace a DC switch disconnector. DC imposes different requirements for breaking capacity and arc extinction.

Installer-friendly design

The compact TP version shown combines clear position indication with generous wiring space and flexible cable entries.

Interior view of a 3P+N switch disconnector — Easily accessible terminals and generous wiring space

Open enclosure of a 3P+N switch disconnector — Reversible base with prepared cable entries

Switch disconnector advantages in the video

The short plica video presents the robust design, clear operation and installer-friendly details.

Open video on YouTube

How to select a PV switch disconnector

When is 3P+N required?

Three-phase AC system with switched neutral

3P+N is suitable when the three phases and neutral must be isolated together on the AC side. Whether the neutral must be switched depends on the earthing system, system design and inverter requirements.

What do early make and late break mean?

The neutral remains connected during switching

When switching on, the neutral closes before the phases. When switching off, it opens after them.

Is every four-pole switch automatically 3P+N?

No, the data sheet is decisive

A device may have four poles without a dedicated neutral sequence. The 3P+N function must be explicitly confirmed.

Which current ranges are available?

From compact devices to high power

The PV category includes 3P+N AC switch disconnectors from 16 A to 1600 A and separate DC switch disconnectors from 16 A to 40 A.

Suitable switch disconnectors for your PV system

Choose between 3P+N AC switch disconnectors and dedicated DC switch disconnectors.

View AC 3P+N View DC switch disconnector