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Sirius 3RB Microprocessor Based Overload Relay 1 – 4 A, Class 10, Suitable For S0 Size Contactor – Siemens
Product Overview
The 3RB30261PB0 is a microprocessor-based overload relay from Siemens’ Sirius 3RB series. Designed for precise motor protection, this relay is suitable for use with S0 size contactors. It offers reliable overload protection for motors with a current range of 1 to 4 A and is classified as Class 10, ensuring fast tripping in case of overload conditions.
Key Features
- Current Range: 1 – 4 A
- Tripping Class: Class 10
- Compatibility: Suitable for S0 size contactors
- Technology: Microprocessor-based for accurate and reliable protection
- Mounting: Easy installation and integration with contactors
- Protection Functions: Overload protection, phase failure protection, and motor stall protection
- Diagnostics: LED indicators for status and fault detection
- Adjustable Settings: Current setting and tripping class can be adjusted for specific applications
Applications
The Sirius 3RB overload relay is ideal for use in various industrial and commercial applications, including:
- Motor protection in conveyor systems
- Pump and fan control
- Machine tools and automation systems
- HVAC systems
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Operational Current (Ie) | 1 – 4 A |
| Tripping Class | Class 10 |
| Mounting Type | Snap-on mounting for S0 contactors |
| Operating Voltage | 24 V AC/DC to 240 V AC/DC |
| Ambient Temperature | -20°C to +60°C |
| Protection Degree | IP20 |
Benefits
- Enhanced motor protection with precise tripping characteristics
- Compact design for space-saving installation
- Easy to configure and integrate into existing systems
- Reliable performance in harsh industrial environments
Compliance and Certifications
The 3RB30261PB0 complies with international standards and certifications, ensuring safety and reliability in industrial applications.
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