Siemens 3RB Overload Relay 2NO + 2NC, 0.3 → 630 A F.L.C, 6 A Contact Rating, 240 V, DP, SIRIUS

This overload relay is designed for motor overload protection and offers comprehensive monitoring of your motor systems. With dimensions of 111mm in length, 45mm in width, and 95mm in depth, this device supports a wide operating temperature range of -25°C to +60°C.

• Adjustable current response from 0.3A to 630A enhances protection
• DP pole configuration optimises circuit integration for efficiency
• Manual and automatic reset options provide operational flexibility
• Rated for a control supply voltage of 240V, ensuring compatibility
• Auxiliary circuits feature screw terminal connections for easy installation
• High surge voltage resistance protects systems from voltage spikes

• Employed in industrial motor for enhanced safety
• Utilised in automation systems to prevent motor overheating
• Suitable for machinery requiring reliable overload protection
• Ideal for environments with varying operational temperatures

This relay supports a current rating adjustable from 0.3 A up to 630 A, making it suitable for a variety of motor sizes and applications.

The relay features a robust design with a finger-safe IP20 rating on the front, which helps minimise the risk of accidental contact with live parts.

The auxiliary circuit is equipped with screw-type terminals, allowing for secure and reliable connections to conductors sized from 0.5mm² to 2.5mm².

Yes, the relay's mounting position is versatile, allowing for stand-alone installation in any orientation, which facilitates flexible integration into existing setups.