1. Main Specifications| Product Type | SIRIUS 3RB2 Series Thermal Overload Relay | | Product Model | 3RB2056-1FW2 | | Rated current (AC-3) | 200 | | Product Dimensions | 119 MM × 120 MM × 155 MM | | Current setting range | 50-200A | | weight | 712 g |
2. Key Selling Points- Compact Thermal Overload Relay: Part of the Siemens SIRIUS 3RB2 series, with a space-saving
design that directly mounts to SIRIUS contactors (e.g., 3RT2),
ideal for motor control applications where panel space is limited.
- Wide Adjustable Current Range: Adjustable current setting from 10 A to 16 A, suitable for protecting medium-power three-phase AC motors and
accommodating various load requirements, reducing spare part
inventory.
- Precise Motor Protection: Provides reliable thermal overload protection and phase-loss
(single-phasing) protection, effectively preventing motor damage
caused by overloads, stalling, or missing phases, thereby extending
motor service life.
- Mechanical Interlock Design: Enables mechanical interlocking when combined with contactors,
ensuring a secure and stable connection between the relay and
contactor, preventing loosening and poor contact.
- Clear Status Indication: Features a visible trip indicator (typically red), allowing quick
identification of motor fault conditions and reducing
troubleshooting and maintenance time.
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