OS1200L12
Product ID:74175
Updated: 2026/4/3
Key Features
- 1Handle up to 1200 A with a robust Class L fuse system. 2、Operate easily via a front-mounted handle design. 3、Achieve rapid fault clearance for maintained protection. 4、Protect motors and install near transformers reliably. 5、Enhance safety with padlockable handles and interlocking covers.
Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Pollution Degree | 3 | Product Net Width | 432 mm |
| Product Net Height | 426 mm | Product Net Depth / Length | 294 mm |
| Product Net Weight | 31.23 kg 68.85 lb | Conventional Free-air Thermal Current (Ith) | Π= 40 °C 1250 A |
| Conventional Thermal Current (Ithe) | Fully Enclosed 1000 A | Fuse Size | 1200 A |
| Fuse System | Class L | Handle Type | Handle and shaft not included |
| Mounting Type | Base mounting | Number of Poles | 3 |
| Operating Mode | Front Operated | Pollution Degree | 3 |
| Position of Line Terminals | Top In - Bottom Out, Bottom In - Top Out | Power Loss | at Rated Operating Conditions per Pole 75 W |
| Rated Conditional Short-Circuit Current (Inc) | (690 V) 80 kA | Rated Current (In) | Main Circuit 1200 A |
| Rated Impulse Withstand Voltage (Uimp) | 12 kV | Rated Insulation Voltage (Ui) | 1000 V |
| Rated Operational Current AC-21B (Ie) | (500 V) 1250 A (690 V) 1250 A | Rated Operational Current AC-22A (Ie) | (380 ... 415 V) 1250 A |
| Rated Operational Current AC-22B (Ie) | (500 V) 1250 A (690 V) 1250 A | Rated Operational Current AC-23A (Ie) | (380 ... 415 V) 1000 A |
| Rated Operational Current AC-23B (Ie) | (500 V) 1000 A (690 V) 1000 A | Rated Operational Power AC-23A (Pe) | (220 ... 240 V) 315 kW (400 V) 560 kW (415 V) 560 kW (500 V) 710 kW (690 V) 1000 kW |
| Rated Operational Voltage | Main Circuit 600 V AC | Rated Short-time Withstand Current Low Voltage (Icw) | for 1 s 40 kiloampere rms |
| Standards | UL98 IEC 60947-3 | Switches Operating Mechanism | 12 (Between the Poles) |
| Terminal Type | Lug terminals | Terminal Width | 50 mm |
| Tightening Torque | 50 ... 75 N·m | Ampere Rating | 1200 A |
| Tightening Torque | 50 ... 75 N·m | Tightening Torque UL/CSA | Wire-Clamp 500 in·lb Cable Lug 480 in·lb |
| Object Classification Code | Q | ETIM 8 | EC001040 - Fuse switch disconnector |
| ETIM 9 | EC001040 - Fuse switch disconnector | UNSPSC | 39122233 |
| IDEA Granular Category Code (IGCC) | 5291 >> Fuse switch disconnector | eClass | V11.1 : 27371401 |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) | Manufacturer ID | 1SCA105315R1001 |
Specifications may be subject to change without notice