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3RT1055-6AR36
The Siemens 3RT1055-6AR36 is a power contactor designed for robust electrical control applications. This 3-pole device can handle up to 150 A rated operational current and delivers a rated operational power of 75 kW at 400 V AC.
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Technical specifications for 3RT1055-6AR36
| Manufacturer | Siemens |
|---|---|
| Product Type | Power Contactor (3-pole) |
| Product Line | SIRIUS |
| Part Number | 3RT1055-6AR36 |
| UPC | 754554771700 |
| Weight | 7.00 lbs (3.18 kg) |
| Rated Operational Current (AC-3, 400V) | 150 A |
| Rated Operational Power (AC-3, 400V) | 75 kW |
| Auxiliary Contacts Configuration | 2 Normally Open (NO) + 2 Normally Closed (NC) |
| Control Supply Voltage Range | 440–480 V AC/DC |
| Surge Voltage Resistance (Main Circuit) | 8 kV (impulse withstand) |
| Mechanical Lifespan (Operating Cycles) | 10,000,000 cycles (standard) |
| Insulation Voltage (Main Circuit) | 1,000 V (degree of pollution 3) |
| Ambient Temperature Range (Operation) | -25°C to +60°C |
| Mounting Method | Screw fixing (vertical mounting, +/-90° rotatable) |
| Connection Type (Main Circuit) | Busbar with screw terminals (25–120 mm² conductor cross-section) |
| Short-Time Withstand Current (1s) | 1,500 A (cold state, 40°C max) |
| Protection Class (Front) | IP00 (standard); IP20 with optional terminal cover |
| Fuse Requirements (Short-Circuit) | Type 1 coordination: 355 A gG (690V, 100 kA) |
This power contactor from Siemens, designated as the 3RT1055-6AR36, efficiently facilitates control in various electrical applications. It is designed specifically as a three-pole contactor, providing reliable management of substantial current loads. With a maximum operational current rating of 150 A at 400V AC, it ensures effective performance in high-demand scenarios, supported by a rated operational power of 75 kW.
The functionality of this contactor is enhanced by its auxiliary contact configuration, which features two normally open (NO) and two normally closed (NC) contacts. Its control supply voltage operates within the range of 440 to 480 V AC or DC, offering versatility in varied applications. Resilient to surge voltages, this unit withstands impulses of up to 8 kV. This characteristic contributes to its reliability, especially in industrial settings where voltage spikes may occur.
Built to endure rigorous conditions, the contactor boasts a mechanical lifespan of 10 million cycles, making it a durable option for routine use. The insulation voltage rated at 1,000 V applies to degree of pollution 3 installations, ensuring safety across various environments. Operational ranges extend from -25°C to +60°C, accommodating diverse ambient conditions.
Weighing in at 3.375 kg, it is manageable for installation purposes. This contactor is mounted through a screw-fixing method, allowing for straightforward vertical installation, which can be adjusted with +/-90° rotation. The main circuit connections are facilitated via busbar with screw terminals, supporting conductor cross-sections from 25 mm² to 120 mm². Additionally, the device can endure a short-time withstand current of 1,500 A when in a cold state at a maximum temperature of 40°C. Initially rated IP00 for protection, an optional terminal cover enhances its protection class to IP20. To ensure safety during potential short-circuit events, the contactor requires fuses rated for Type 1 coordination, specifically 355 A gG for 690V at a fault level of up to 100 kA.
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