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OT250E04CLP ABB 250 A 4-Pole Closed-Transition Manual Changeover Switch
ABB OT250E04CLP is a 250 A 4-pole I-I+II-II closed-transition manual changeover switch supplied with an IP65 pistol-type handle and shaft for specialised low-voltage power source transfer applications.
£928.97
Why Choose the ABB OT250E04CLP 250 A 4-Pole Closed-Transition Manual Changeover Switch?
The ABB OT250E04CLP is a heavy-duty 250 A 4-pole closed-transition manual changeover switch designed for controlled transfer between two electrical supplies in low-voltage power distribution systems. As part of the ABB OT Changeover Switches range, it is specifically configured for applications requiring closed-transition manual source transfer.
Unlike conventional I-O-II open-transition changeover switches, the OT250E04CLP uses an I-I+II-II closed-transition operating sequence. There is no OFF position during the normal switching sequence; instead, an intermediate I+II position momentarily connects both switching paths, making this model suitable for applications where its closed-transition operating principle is specifically required.
With a rated current of 250 A and a 4-pole configuration, the OT250E04CLP provides substantial switching capability for four-conductor power systems. It is supplied with a black plastic IP65 I-I+II-II pistol-type handle, operating shaft and bolt set for cable connection, providing the principal components required for manual operation.
Key Advantages
- Heavy-duty 250 A closed-transition manual changeover switch.
- 4-pole configuration for simultaneous switching of four conductors.
- I-I+II-II closed-transition operation with an intermediate I+II position.
- No OFF position in the normal changeover operating sequence.
- 250 A AC-21A, AC-22A and AC-23A switching capability at 380–415 V.
- Supplied with IP65 pistol-type handle, operating shaft and cable connection bolt set.
- Designed for installations requiring controlled closed-transition manual source transfer.
Key Features
- ABB OT Changeover Switches range.
- 250 A rated current.
- 4-pole switching configuration.
- Manual I-I+II-II closed-transition operation.
- Intermediate I+II position with both switching paths closed.
- 1000 V rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 8 kA for 1 s rated short-time withstand current.
- Black plastic IP65 pistol-type operating handle.
Closed-Transition Manual Power Source Changeover
The ABB OT250E04CLP is designed around a closed-transition changeover principle. Its I-I+II-II sequence incorporates an intermediate I+II position in which both switching paths are closed, rather than using the OFF position found in conventional open-transition changeover switches.
This operating arrangement makes the OT250E04CLP suitable for power distribution installations specifically engineered for closed-transition transfer. Its 250 A rating, four-pole construction and supplied manual operating components provide a robust solution for specialised source-transfer systems.
Typical Applications
- Closed-transition manual power source transfer systems.
- UPS-related changeover applications designed for closed-transition operation.
- Industrial low-voltage distribution switchboards.
- Four-pole electrical source-transfer systems.
- Commercial and industrial power distribution equipment.
- Specialised installations requiring I-I+II-II manual switching.
Technical Specifications
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| Operation | Manual | |
|---|---|---|
| Device Type | Manual changeover switch | |
| Series | OT Changeover Switches | |
| ABB order code | 1SCA108605R1001 | |
| Product type | Closed-transition manual changeover switch | |
| Rated current | 250 A | |
| Number of poles | 4 | |
| Operation | Manual | |
| Switch positions | I-I+II-II | |
| Transition type | Closed transition | |
| Operating mechanism | Mechanism at end of switch | |
| Rated operational voltage | 1000 V | |
| Rated insulation voltage | 1000 V | |
| Rated impulse withstand voltage | 12 kV | |
| AC-21A rated current at 380–415 V | 250 A | |
| AC-22A rated current at 380–415 V | 250 A | |
| AC-23A rated current at 380–415 V | 250 A | |
| AC-23A operational power at 400–415 V | 110 kW | |
| Rated short-time withstand current | 8 kA for 1 s | |
| Power loss | 6.5 W per pole | |
| Handle | Black plastic IP65 I-I+II-II pistol-type handle | |
| Handle padlocking | Not designed for this product type | |
| Door interlocking | Not designed for this product type | |
| Dimensions (W × H × D) | 205 × 150 × 160 mm | |
| Net weight | 4.1 kg | |
| Product group | OT Change over Switches |
Frequently Asked Questions
What is the ABB OT250E04CLP used for?
The ABB OT250E04CLP is used for closed-transition manual changeover between electrical supplies in suitably designed low-voltage power distribution systems.
What is the current rating of the OT250E04CLP?
The OT250E04CLP has a rated current of 250 A.
How many poles does the OT250E04CLP have?
The OT250E04CLP is a 4-pole closed-transition manual changeover switch.
What does closed-transition operation mean on the OT250E04CLP?
The switch uses an I-I+II-II sequence with an intermediate I+II position where both switching paths are closed, rather than an OFF position between sources.
Does the ABB OT250E04CLP include a handle and shaft?
Yes. It is supplied with a black plastic IP65 I-I+II-II pistol-type handle, operating shaft and bolt set for cable connection.
Trusted for Specialised Power Transfer Applications
ABB OT closed-transition manual changeover switches provide robust source-transfer capability for electrical systems specifically designed around I-I+II-II operation, combining high-current switching performance with practical manual operation.
