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Switch Disconnectors & Transfer Switches
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Switch Disconnectors & Transfer Switches
Siemens 3VA1112-1AA36-0AA0 3VA1 125A 3P 690V Switch Disconnector
Siemens 3VA1110-1AA46-0AA0 3VA1 100A 4P 690V Switch Disconnector
Siemens 3VA1110-1AA36-0AA0 3VA1 100A 3P 690V Switch Disconnector
Siemens 3NJ5930-3BB 3NJ5 Switch Disconnector
Siemens 3NJ4143-3DF01 3NJ4 630A 3P 800V Switch Disconnector
Siemens 3NJ4143-3BF01 3NJ4 630A 3P 690V Switch Disconnector
Siemens 3NJ4141-3BF01 3NJ4 630A 3P 690V Switch Disconnector
Siemens 3NJ4133-3BF01 3NJ4 400A 3P 690V Switch Disconnector
Siemens 3NJ4131-3BF01 3NJ4 400A 3P 690V Switch Disconnector
Siemens 3NJ4123-3DF01 3NJ4 250A 3P 800V Switch Disconnector
Siemens 3NJ4123-3BF01 3NJ4 250A 3P 690V Switch Disconnector
Siemens 3NJ4121-3BF01 3NJ4 250A 3P 690V Switch Disconnector
Siemens 3NJ4103-3DF02 3NJ4 160A 3P 800V Switch Disconnector
Siemens 3NJ4103-3DF01 3NJ4 160A 3P 800V Switch Disconnector
Siemens 3NJ4103-3BR02 3NJ4 160A 3P 690V Switch Disconnector
Siemens 3NJ4103-3BF02 3NJ4 160A 3P 690V Switch Disconnector
Siemens 3NJ4103-3BF01 3NJ4 160A 3P 690V Switch Disconnector
Siemens 3NJ4101-3BF01 3NJ4 160A 3P 690V Switch Disconnector
Siemens 3NG1503 3NG1 1000A Switch Disconnector
Siemens 3NG1402 3NG1 630A Switch Disconnector
Switch disconnectors and transfer switches from ABB, Siemens, Schneider Electric and Mersen, covering isolation, manual changeover, automatic transfer and cam switching from 6 A up to 3800 A. The range includes 1P to 4P devices, with 3P and 4P the most common. Stoklink ships worldwide from Turkey and quotes project volumes on request.
What's in this range
- Switch Disconnectors – load-break isolators for panels and machines, including handles, shafts and interlocks.
- Changeover Switches (Manual & Motorized) – select between two supplies, such as mains and generator.
- Automatic Transfer Switches (ATS) – controller-driven transfer, including TransferPacT and ABB OXB and OTM units.
- Cam Switches – Harmony K rotary switches for control, metering and small loads.
How to choose
- Rated current and utilization category. Match the AC-22 or AC-23 duty to the load, and size for the full load current.
- Pole count. Use 4P where the neutral must be switched, for example when changing between two sources.
- Voltage and short-circuit withstand. Check the rating against the fault level at the installation point.
- Control method. Manual operation suits most panels. Choose motorized or automatic transfer when the change must happen without an operator.
- Mounting. Pick DIN-rail, base, door-coupled or enclosed to fit the panel layout.
FAQ
What is the difference between a switch disconnector and a circuit breaker?
A switch disconnector isolates and switches load current but gives no overcurrent protection. A circuit breaker also trips on overload and short circuit, so a protective device is normally installed upstream of the switch.
When should I use an ATS instead of a manual changeover switch?
Use an ATS when the transfer must happen automatically after a mains failure, for example to a generator. A manual changeover switch needs an operator and suits sites where short outages are acceptable.
Do you ship outside Turkey?
Yes. Stoklink ships worldwide from Turkey on EXW terms. Lead time depends on distributor stock, and we quote project quantities on request.