Why Choose the ABB OT2500E04CP 2500A 4-Pole Manual Change-Over Switch?
The ABB OT2500E04CP is a heavy-duty 2500 A four-pole manual change-over switch designed for reliable power source selection and electrical load transfer in industrial, commercial and large-scale low-voltage distribution systems. As part of the ABB OT change-over switch series, it provides robust manual switching between two independent electrical supplies, making it suitable for mains-to-generator changeover, alternative feeder selection and critical power distribution applications.
This change-over switch features a three-position I-0-II operating mechanism, allowing operators to select either power source or disconnect the load in the central OFF position. Its open-transition, break-before-make switching arrangement ensures that one supply is disconnected before the alternative supply is connected, preventing simultaneous connection of the two sources during normal changeover operation.
With a rated current of 2500 A, a four-pole configuration and a rated operational voltage of up to 1000 V, the OT2500E04CP is engineered for demanding electrical distribution installations. Its robust base-mounted construction, included black plastic IP65 pistol-type handle, operating shaft and cable connection bolt set provide a practical solution for high-current manual power transfer in industrial switchboards and electrical control cabinets.
Key Advantages
- Heavy-duty 2500 A manual change-over switch for high-current electrical distribution applications.
- Four-pole switching configuration enables simultaneous transfer of four electrical conductors.
- Three-position I-0-II operation provides clear source selection and a central OFF position.
- Open-transition switching prevents simultaneous connection of two independent power sources during normal operation.
- Rated operational voltage up to 1000 V for demanding low-voltage electrical systems.
- Black plastic IP65 pistol-type operating handle provides reliable manual operation when correctly installed.
- Padlockable OFF position supports secure isolation during maintenance.
- Door interlocking functionality helps improve operational safety within electrical switchboards.
- Base-mounted construction supports installation in industrial switchgear assemblies.
- Handle, shaft and cable connection bolt set included for convenient installation.
- Suitable for mains-to-generator changeover and alternative power supply selection.
- Robust construction designed for long-term operation in industrial power distribution environments.
Key Features
- ABB OT manual change-over switch series.
- 2500 A rated current for high-capacity electrical distribution systems.
- Four-pole (4P) switching configuration.
- Manual I-0-II operating mechanism.
- Open-transition, break-before-make operation.
- Rated insulation voltage of 1000 V.
- Rated impulse withstand voltage of 12 kV.
- 2500 A AC-21B operational current at 380–415 V AC.
- 2000 A AC-31B operational current at 380–415 V AC.
- 1700 A AC-33B operational current at 380–415 V AC.
- Rated short-time withstand current of 55 kA.
- Black IP65 pistol-type handle for front operation.
- Padlockable OFF position for maintenance isolation.
- Door interlock in I and II positions and when the handle is padlocked.
- Operating mechanism positioned on the left side of the switch.
- Base-mounted installation for industrial switchboards.
- IP20 front protection rating for the switch body.
- Operating handle, shaft and cable connection bolt set supplied.
Technical Specifications
- Manufacturer: ABB
- Series: OT Change-Over Switches
- Model: OT2500E04CP
- ABB order code: OT2500E04CP
- ABB product ID: 1SCA103906R1001
- ABB product group: OT Change over Switches
- Product type: Manual change-over switch
- Rated current: 2500 A
- Number of poles: 4
- Switching positions: I-0-II
- Transition type: Open transition
- Switching principle: Break-before-make
- Operating mechanism: Manual, front operated
- Operating mechanism position: Left side
- Rated operational voltage (Ue): Up to 1000 V
- Rated insulation voltage (Ui): 1000 V
- Rated impulse withstand voltage (Uimp): 12 kV
- Conventional free-air thermal current (Ith): 2500 A at 40 °C
- Rated operational current AC-21B at 380–415 V AC: 2500 A
- Rated operational current AC-21B at 500 V AC: 2500 A
- Rated operational current AC-31B at 380–415 V AC: 2000 A
- Rated operational current AC-33B at 380–415 V AC: 1700 A
- Rated short-time withstand current (Icw): 55 kA
- Switch body front protection rating: IP20
- Operating handle protection rating: IP65 when correctly installed
- Handle type: Pistol-type operating handle
- Handle material: Plastic
- Handle colour: Black
- Padlocking: Padlockable in OFF position
- Door interlock: Interlocking in I and II positions and when padlocked
- Mounting type: Base mounting
- Operating direction: Front operation
- Terminal arrangement: Top incoming / bottom outgoing or bottom incoming / top outgoing
- Enclosure: Not included
- Fuse protection: Not included
- Included accessories: Operating handle, shaft and cable connection bolt set
- Dimensions (H × W × D): 377 × 664 × 335 mm
- Net weight: approx. 69.55 kg
- EAN: 6417019382708
- Applicable standards: IEC 60947-1, IEC 60947-3 and IEC 60947-6-1
Reliable High-Current Power Source Changeover
Manual change-over switches such as the ABB OT2500E04CP allow electrical loads to be transferred between two separate power supplies. The three-position I-0-II operating mechanism provides a defined switching sequence, allowing the connected load to receive power from source I, be disconnected in the central OFF position, or receive power from source II.
The open-transition switching mechanism disconnects the active power source before connecting the alternative supply. This makes the OT2500E04CP suitable for correctly engineered mains-to-generator changeover systems, alternative feeder selection and high-current electrical distribution applications where independent power sources must not be connected together.
The four-pole configuration allows simultaneous switching of four conductors, including a neutral conductor where required by the electrical installation design. Its substantial 2500 A current rating and robust mechanical construction make it suitable for large industrial switchboards, main distribution assemblies and commercial electrical infrastructure.
The switch is designed for base mounting inside an electrical enclosure, with the included shaft and pistol-type handle enabling manual operation from the front of the switchboard. The handle can be padlocked in the OFF position, while the door interlocking arrangement provides additional control over access to the electrical assembly. The OT2500E04CP is a manually operated change-over switch and does not provide automatic source transfer, overload protection or short-circuit interruption independently; suitable protective devices and system-level safety measures must be incorporated into the installation.
Typical Applications
- High-current mains-to-generator changeover installations.
- Industrial main electrical distribution switchboards.
- Commercial building power distribution systems.
- Alternative feeder selection and dual-supply installations.
- Large manufacturing facilities and production plants.
- Industrial standby power and generator distribution systems.
- Critical infrastructure and facility power distribution.
- Electrical substations and low-voltage switchgear assemblies.
- Large industrial process control power systems.
- OEM switchboard manufacturing and electrical panel building.
- Industrial maintenance isolation and manual supply transfer.
- Commercial and industrial electrical infrastructure upgrades.
