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Siemens SIRIUS 3RW4036-1BB04

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3RW4036-1BB04

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The Siemens 3RW4036-1BB04 is a device from the SIRIUS 3RW40 series, functioning as a soft starter. It is designed to handle operational currents with ratings decreasing as ambient temperature increases: 45 A at 40°C, 42 A at 50°C, and 39 A at 60°C.

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Technical specifications for 3RW4036-1BB04

ManufacturerSiemens
Product TypeSoft Starter (SIRIUS 3RW40 Series)
Product LineSIRIUS
Part Number3RW4036-1BB04
UPC754554958606
Weight1.31 lbs (0.60 kg)
Rated Operational Current (AC-53a, 40°C)45 A
Rated Operational Current (AC-53a, 50°C)42 A
Rated Operational Current (AC-53a, 60°C)39 A
Minimum Adjustable Motor Overload Current23 A
Power Dissipation During Operation6 W
Power Dissipation During Start-Up (300% In, 40°C)316 W
Rated Motor Current for Normal Start (Class 10, 3s)45 A
Permissible Starts per Hour (Class 10, 3s)38
Rated Motor Current for Heavy Start (Class 15, 4.5s)42 A
Permissible Starts per Hour (Class 15, 4.5s)30
Rated Motor Current for Heavy Start (Class 20, 6s)38 A
Permissible Starts per Hour (Class 20, 6s)30
Integrated Motor Overload ProtectionYes
Short Circuit Protection with Semiconductor FusesOptional
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The Siemens SIRIUS 3RW4036-1BB04 serves as a soft starter that provides controlled starting conditions for motors. The rated operational current of this model is balanced at 45 A at ambient temperatures of 40°C, which decreases to 42 A and 39 A when temperatures rise to 50°C and 60°C, respectively.

With a minimum adjustable overload current fixed at 23 A, this device includes integrated motor overload protection. Operational efficiency during standard use results in a power dissipation of 6 watts. However, during a startup phase at 300% of the nominal current rating, the soft starter has a higher power dissipation level of 316 watts.

The 3RW4036-1BB04 accommodates various starting conditions. For class 10 motors, it supports a normal start for 45 A with up to 38 allowable starts per hour over a period of 3 seconds. For a heavy start scenario categorized under class 15, it can manage 42 A with 30 starts permissible over 4.5 seconds, and under class 20, it handles 38 A with similar limits. The optional short circuit protection is available via semiconductor fuses. This soft starter's flexible features make it suitable for diverse applications requiring reliable motor control.