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OT125ML4 ABB 125 A 4-Pole Installation Switch-Disconnector
ABB 1SCA022317R2880 OT125ML4 is a compact 125 A 4-pole installation switch-disconnector rated to 750 V with 125 A AC-22A switching capability and an operating mechanism between the poles, supplied without a handle or shaft.
£136.85
Why Choose the ABB 1SCA022317R2880 OT125ML4 Installation Switch?
The ABB 1SCA022317R2880, order code OT125ML4, is a compact 125 A, 4-pole installation switch-disconnector designed for dependable manual switching and electrical isolation in industrial and commercial low-voltage systems. As part of the ABB 311027-OT Switches product group, it combines a compact installation format with the proven switching performance of ABB's OT range.
The OT125ML4 features a 4-pole configuration and an operating mechanism positioned between the poles. This specific model is supplied without an operating handle and shaft, allowing compatible ABB operating accessories to be selected separately according to the panel, enclosure and installation requirements.
With a conventional free-air thermal current of 125 A, a rated operational voltage of up to 750 V and AC-21A and AC-22A ratings of 125 A at common industrial voltages, the OT125ML4 provides a versatile solution for distribution boards, control panels, machinery and other installations requiring compact four-pole isolation.
Key Advantages
- Compact 125 A installation switch-disconnector for low-voltage applications.
- 4-pole configuration for coordinated switching and isolation of four conductors.
- 125 A AC-21A and AC-22A switching capability at common industrial voltages.
- Rated operational voltage of up to 750 V.
- Operating mechanism positioned between the poles for compact installation.
- Handle and shaft ordered separately, allowing the operating arrangement to be matched to the installation.
Key Features
- ABB OT125 installation switch-disconnector series.
- 125 A conventional free-air thermal current.
- 4-pole switching configuration.
- 125 A AC-21A at 415 V AC.
- 125 A AC-21A at 690 V AC.
- 125 A AC-22A at 380–415 V AC.
- 125 A AC-22A at 500 V AC.
- 125 A AC-22A at 690 V AC.
- 90 A AC-23A at 380–415 V AC.
- 45 kW AC-23A operational power at 400–415 V AC.
- 750 V rated operational and insulation voltage.
- 8 kV rated impulse withstand voltage.
- 2.5 kA short-time withstand current for 1 s.
- Operating mechanism positioned between the poles.
- Handle and shaft ordered separately.
Compact Four-Pole Installation Switching
Installation switch-disconnectors provide a convenient means of manually switching and isolating electrical circuits while maintaining a compact footprint for integration into panels and distribution equipment. The ABB OT125ML4 combines a 125 A thermal current rating with four-pole switching, making it suitable where multiple conductors need to be disconnected together.
The OT125ML4 provides 125 A AC-22A performance up to 690 V and AC-23A motor-load switching capability of up to 45 kW across several common industrial supply voltages. With the handle and shaft selected separately, panel builders can configure the operating arrangement to suit the enclosure and application.
Typical Applications
- Industrial and commercial distribution boards.
- Electrical control panels and switchboards.
- Four-pole circuit isolation.
- Machinery and production equipment.
- Motor and industrial load switching.
- Building services and electrical distribution.
- OEM panels and equipment assemblies.
Technical Specifications
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| Poles | 4-pole | |
|---|---|---|
| Device Type | Switch Disconnector | |
| Current | 125 A | |
| Power | 22 kW | |
| Product Series | ABB OT | |
| Product group | 311027-OT Switches | |
| Series | OT125 | |
| Order code | OT125ML4 | |
| ABB type designation | OT 125 ML4 | |
| Product ID / MPN | 1SCA022317R2880 | |
| Product type | Installation switch-disconnector | |
| Rated current | 125 A | |
| Number of poles | 4 | |
| Conventional free-air thermal current (Ith) | 125 A at 40 °C | |
| Fully enclosed thermal current (Ithe) | 125 A | |
| Rated operational current AC-21A at 415 V AC | 125 A | |
| Rated operational current AC-21A at 690 V AC | 125 A | |
| Rated operational current AC-22A at 380–415 V AC | 125 A | |
| Rated operational current AC-22A at 500 V AC | 125 A | |
| Rated operational current AC-22A at 690 V AC | 125 A | |
| Rated operational current AC-23A at 380–415 V AC | 90 A | |
| Rated operational current AC-23A at 500 V AC | 70 A | |
| Rated operational current AC-23A at 690 V AC | 50 A | |
| Rated operational power AC-23A at 220–240 V | 22 kW | |
| Rated operational power AC-23A at 400 V | 45 kW | |
| Rated operational power AC-23A at 415 V | 45 kW | |
| Rated operational power AC-23A at 500 V | 45 kW | |
| Rated operational power AC-23A at 690 V | 45 kW | |
| Rated operational voltage | 750 V | |
| Rated insulation voltage (Ui) | 750 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Rated short-time withstand current (Icw) | 2.5 kA for 1 s | |
| Operating mechanism | Between the poles | |
| Handle | Not included; ordered separately | |
| Operating shaft | Not included; ordered separately | |
| Pollution degree | 3 | |
| Power loss | 6.3 W | |
| Product dimensions (W × H × D) | 97 × 100 × 74 mm | |
| Product net weight | 1.2 kg | |
| EAN | 6417019194844 |
Frequently Asked Questions
What is the ABB 1SCA022317R2880 OT125ML4 used for?
The ABB OT125ML4 is a 125 A, 4-pole installation switch-disconnector designed for manual switching and electrical isolation in industrial, commercial and equipment-based low-voltage installations.
How many poles does the ABB OT125ML4 have?
The OT125ML4 has a 4-pole configuration, allowing four electrical conductors to be switched and isolated together.
What is the current rating of the ABB OT125ML4?
The OT125ML4 has a conventional free-air thermal current of 125 A and an AC-22A operational current rating of 125 A at 380–415 V, 500 V and 690 V.
Does the ABB OT125ML4 include a handle and shaft?
No. The OT125ML4 is supplied without an operating handle and shaft. Compatible ABB handle and shaft accessories must be selected and ordered separately for the required installation.
What motor-load switching capability does the ABB OT125ML4 provide?
The OT125ML4 is rated for AC-23A operational power of 45 kW at 400 V, 415 V, 500 V and 690 V, with an AC-23A operational current of 90 A at 380–415 V.
Trusted ABB Compact Switching Technology
ABB OT installation switch-disconnectors provide dependable manual switching and isolation in compact low-voltage systems, combining robust electrical performance, flexible operating arrangements and practical integration into industrial and commercial equipment.
