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The 3RB31 solid-state overload relays up to 40 A with internal power supply have been designed for inverse-time delayed protection of loads with normal and heavy starting against excessive temperature rises due to overload, phase unbalance or phase failure.
The 3RB31 solid-state overload relays are suitable for customers from all industries who want to guarantee optimum inverse-time delayed protection of their electrical loads (e.g. motors) under normal and heavy starting conditions (CLASS 5 to CLASS 30 selectable), minimize project completion times, inventories and power consumption, and optimize plant availability and maintenance management.

With Suitable Terminal Brackets, These Overload Relays Can Also Be Installed as Stand-Alone Units

Screw Terminals

Trip Type Class 5, 10, 20 and 30 Adjustable

Overload Protection, Phase Failure Protection and Unbalance Protection

Internal Ground-Fault Detection (Requires Activation)

Internal Power Supply

Auxiliary Contacts 1 NO + 1 NC

Manual and Automatic RESET

Electrical Remote RESET Integrated

Switch Position Indicators

TEST Function and Self-Monitoring

Brand/Series	3RB Series
Contact Current Rating	4 A
Current Rating	1 to 4 A
Depth	2.874" (73mm)
Dimensions	1.772 x 3.11 x 2.874" (45 x 79 x 73 mm)
For Use With	S00 Size Contactor
Length	1.772" (45mm)
Mounting Style	Panel Mount
Relay Type	Solid State, Overload
Size	S00
Special Features	Display of Operating State on Device, RESET Button, TEST Function
Supply Voltage	690 V
Temperature, Operating, Maximum	60°C
Temperature, Operating, Minimum	-25°C
Temperature, Operating, Range	-25 to 60°C
Terminal Type	Screw
Type	Relay
Width	3.11" (79mm)
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• Siemens
  Sirius 3RT 4 Pole Contactor, 18 A, 18 kW, 24 V dc Coil
  
  型号：3RT23161BB40
  仓库库存编号：70239878
  
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Brand/Series 3RB Series  Siemens Brand/Series 3RB Series  Contactor & Control Relay Overloads Brand/Series 3RB Series  Siemens Contactor & Control Relay Overloads Brand/Series 3RB Series   Contact Current Rating 4 A  Siemens Contact Current Rating 4 A  Contactor & Control Relay Overloads Contact Current Rating 4 A  Siemens Contactor & Control Relay Overloads Contact Current Rating 4 A   Current Rating 1 to 4 A  Siemens Current Rating 1 to 4 A  Contactor & Control Relay Overloads Current Rating 1 to 4 A  Siemens Contactor & Control Relay Overloads Current Rating 1 to 4 A   Depth 2.874" (73mm)  Siemens Depth 2.874" (73mm)  Contactor & Control Relay Overloads Depth 2.874" (73mm)  Siemens Contactor & Control Relay Overloads Depth 2.874" (73mm)   Dimensions 1.772 x 3.11 x 2.874" (45 x 79 x 73 mm)  Siemens Dimensions 1.772 x 3.11 x 2.874" (45 x 79 x 73 mm)  Contactor & Control Relay Overloads Dimensions 1.772 x 3.11 x 2.874" (45 x 79 x 73 mm)  Siemens Contactor & Control Relay Overloads Dimensions 1.772 x 3.11 x 2.874" (45 x 79 x 73 mm)   For Use With S00 Size Contactor  Siemens For Use With S00 Size Contactor  Contactor & Control Relay Overloads For Use With S00 Size Contactor  Siemens Contactor & Control Relay Overloads For Use With S00 Size Contactor   Length 1.772" (45mm)  Siemens Length 1.772" (45mm)  Contactor & Control Relay Overloads Length 1.772" (45mm)  Siemens Contactor & Control Relay Overloads Length 1.772" (45mm)   Mounting Style Panel Mount  Siemens Mounting Style Panel Mount  Contactor & Control Relay Overloads Mounting Style Panel Mount  Siemens Contactor & Control Relay Overloads Mounting Style Panel Mount   Relay Type Solid State, Overload  Siemens Relay Type Solid State, Overload  Contactor & Control Relay Overloads Relay Type Solid State, Overload  Siemens Contactor & Control Relay Overloads Relay Type Solid State, Overload   Size S00  Siemens Size S00  Contactor & Control Relay Overloads Size S00  Siemens Contactor & Control Relay Overloads Size S00   Special Features Display of Operating State on Device, RESET Button, TEST Function  Siemens Special Features Display of Operating State on Device, RESET Button, TEST Function  Contactor & Control Relay Overloads Special Features Display of Operating State on Device, RESET Button, TEST Function  Siemens Contactor & Control Relay Overloads Special Features Display of Operating State on Device, RESET Button, TEST Function   Supply Voltage 690 V  Siemens Supply Voltage 690 V  Contactor & Control Relay Overloads Supply Voltage 690 V  Siemens Contactor & Control Relay Overloads Supply Voltage 690 V   Temperature, Operating, Maximum 60°C  Siemens Temperature, Operating, Maximum 60°C  Contactor & Control Relay Overloads Temperature, Operating, Maximum 60°C  Siemens Contactor & Control Relay Overloads Temperature, Operating, Maximum 60°C   Temperature, Operating, Minimum -25°C  Siemens Temperature, Operating, Minimum -25°C  Contactor & Control Relay Overloads Temperature, Operating, Minimum -25°C  Siemens Contactor & Control Relay Overloads Temperature, Operating, Minimum -25°C   Temperature, Operating, Range -25 to 60°C  Siemens Temperature, Operating, Range -25 to 60°C  Contactor & Control Relay Overloads Temperature, Operating, Range -25 to 60°C  Siemens Contactor & Control Relay Overloads Temperature, Operating, Range -25 to 60°C   Terminal Type Screw  Siemens Terminal Type Screw  Contactor & Control Relay Overloads Terminal Type Screw  Siemens Contactor & Control Relay Overloads Terminal Type Screw   Type Relay  Siemens Type Relay  Contactor & Control Relay Overloads Type Relay  Siemens Contactor & Control Relay Overloads Type Relay   Width 3.11" (79mm)  Siemens Width 3.11" (79mm)  Contactor & Control Relay Overloads Width 3.11" (79mm)  Siemens Contactor & Control Relay Overloads Width 3.11" (79mm)