ABB OT100G3-4BSN1 100 A 4-pole switch disconnector with left-hand neutral (N1), base or DIN rail mounting and padlockable direct-mounted operating handle.
£100.91
The ABB 1SCA162512R1001, also known as the OT100G3-4BSN1, is a high-performance 100 A, 4-pole switch disconnector from the ABB OT Plus range. Designed for dependable isolation of low-voltage electrical circuits, it is ideal for industrial control panels, commercial distribution boards, machinery and OEM equipment. The four-pole configuration includes a left-hand neutral (N1), making it particularly suitable for three-phase systems requiring neutral isolation.
The OT100G3-4BSN1 supports both base mounting and 35 mm DIN rail mounting, providing installation flexibility for new builds and retrofit projects. It is supplied with a directly mounted black operating handle that can be padlocked in the OFF position to support lockout and maintenance procedures.
Designed in accordance with IEC 60947-3, the switch features protected IP20 screw terminals and is compatible with optional ABB operating shafts and external door-mounted handles where remote operation from an enclosure door is required.
The ABB OT100G3-4BSN1 is designed to safely isolate three-phase electrical systems where neutral disconnection is required. Its four-pole configuration makes it suitable for commercial buildings, industrial machinery, generator installations and power distribution systems that require complete circuit isolation.
The compact G3 frame enables efficient use of enclosure space while maintaining high switching performance. Its dual mounting options and compatibility with ABB external operating accessories make it suitable for both OEM equipment manufacture and retrofit switchboard projects.
| Current | 100 A |
|---|---|
| Phase | Three Phase |
| Manufacturer | ABB |
| Series | OT Plus |
| Product ID | 1SCA162512R1001 |
| Alternative SKU | OT100G3-4BSN1 |
| Product type | Switch disconnector / isolator |
| Frame size | G3 |
| Number of poles | 4 (3P + N1) |
| Neutral position | Left-hand (N1) |
| Rated thermal current (Ith) | 100 A |
| Rated operational current (AC-22A / AC-23A at 690 V) | 100 A / 63 A |
| Rated insulation voltage (Ui) | 800 V |
| Maximum operational voltage | 690 V AC |
| Mounting | Base mounting or 35 mm DIN rail |
| Terminal type | Screw terminals |
| Copper conductor capacity | 2.5–70 mm² |
| Operating handle | Direct-mounted black knob |
| Padlocking | OFF position |
| Degree of protection | IP20 from the front |
| Standards | IEC 60947-3, UL 98 and UL 60947-4-1 |
| Country of origin | Finland |
| HS Code | 85365080 |
| Country of Manufacture | Finland |
It is a 100 A, 4-pole switch disconnector designed for safely isolating three-phase electrical systems where neutral isolation is required.
The ABB catalogue designation is OT100G3-4BSN1.
N1 indicates that the neutral pole is positioned on the left-hand side of the switch when viewed from the front.
Yes. It is suitable for both direct base mounting and installation on a standard 35 mm DIN rail.
Yes. The supplied handle can be padlocked in the OFF position to support safe lockout and maintenance procedures.
Yes. Compatible ABB operating shafts and external door-mounted handles are available separately.
ABB OT Plus switch disconnectors are trusted by electrical contractors, panel builders, OEM machine manufacturers and industrial engineers for reliable circuit isolation, flexible installation and dependable long-term performance.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...