Siemens Overload relay for motor protection, size S00, 1-4A Part number 3RB3016-1PB0

Product Overview

The Siemens SIRIUS electronic overload relay (SKU: 3RB3016-1PB0) is designed for three-phase motor protection in the Size S00 category, covering adjustable current ranges from 1 A to 4 A. It is engineered to safeguard motors against overload, phase failure and asymmetry while allowing seamless mounting on compatible contactors.

Key Features

• Size S00 for compact motor-starter assemblies
• Adjustable current setting: 1 … 4 A
• Trip class: Class 10E
• Integrated auxiliary switch: 1 NC + 1 NO contacts for “contactor de-energised” and “tripped” signal
• Manual or automatic reset modes
• Wide operational voltage: up to 690 V AC (AC-3) at 50/60 Hz with corresponding motor power ratings
• Front protection rating: IP20

Technical Specifications

• Product Type: Electronic overload relay, SIRIUS 3RB3 series
• Article Number: 3RB3016-1PB0
• Size: S00
• Setting Range: 1-4 A
• Trip Class: 10E
• Rated Operating Current (AC-3): 4 A @ 400 V
• Motor Power (AC-3): 0.37-1.5 kW @ 400 V; 0.37-2.2 kW @ 500 V; 0.55-3.0 kW @ 690 V
• Surge Voltage Resistance: 6 kV
• Operating Temperature Range: –25 °C … +60 °C
• Storage/Transport Temp: –40 °C … +80 °C
• Dimensions (H × W × D): 79 mm × 45 mm × 73 mm
• Net Weight (approx): 0.22 kg

Compliance & Certifications

• CE-marked
• RoHS compliant
• Conforms to motor-protection standards for industrial control equipment

Applications

Ideal for protecting three-phase motors in industrial automation applications, this overload relay is suited for compact control panels using the SIRIUS S00 range. Typical uses include motor feeders, small machinery, pumps and fans requiring reliable thermal and electronic protection.