3VA9978-0BB11 Siemens Undervoltage 3VA Molded Case Circuit Breakers Original Brand New


  • 3VA9978-0BB11
  • Alternate Mfr Part Number:3VA9978-0BB11
  • Family Name:3VA Family
  • For Use With:3VA4 / 5 / 6 Series
  • Series:3VA Series
  • UPC Code:804766323430

Availability: 250 in stock

Siemens Undervoltage 3VA Molded Case Circuit Breakers –  3VA9978-0BB11

Requirements are increasing for cost-effective and energy-efficient operation of the electrical power distribution. Whether in industrial applications or buildings, our new 3VA molded case siemens circuit breakers offers safe, efficient and variable application options for low-voltage and medium-voltage power distribution. The 3VA molded case circuit breakers provides UL frame sizes covering 125A to 600A with the 3VA5 and 3VA6 models, as well as IEC frame sizes covering 100A to 630A with the 3VA1 and 3VA2 models.

Siemens  molded case circuit breakers meet both IEC 60947-2 and UL489 standards, and are suitable for global use. The system offers the best preconditions for switchgear manufacturers who export worldwide. You can use all functions of the 3VA  circuit breaker for plants that are operated in North America and in Europe and be completely confident of full compliance with the standards.


  • Up to 250 A, TM, 600 V, up to 100 kA
  • Tested in Accordance with UL489 and IEC 60947-2
  • Molded Case Circuit Breaker Portfolio Suitable for Global Use Thanks to UL and
  • Maximum flexibility thanks to the modular design of the internal and external accessories
  • Outstanding selectivity, for example, makes planning very simple
  • State-of-the-art manufacturing techniques
  • All-round product support provided by integrated online support tools
  • For Protecting Cables, Electrical Loads, and Industrial Plants
  • 3VA5 with TMTU in 1- and 3-Pole Versions Up to 250 A
  • 3VA6 with ETU in Four Breaking Capacity Classes, 3- and 4-Pole Versions Up to 600 A
  • ETU 8-Series with Integrated Metering Function, Optimal Communication via Ethernet (Modbus TCP), Modbus RTU, PROFIBUS, or PROFINET
  • Extensive Range of Accessories for Flexible Function Expansions


Siemens 3VA9978-0BB11, undervoltage release 24V DC accessory for: 3VA4/5/6


DataSheet in PDF

Weight 0.106 kg
Dimensions 90.00 × 125.00 × 40.00 mm


product brand name


product designation


Product version

Auxiliary release


Auxiliary release

Degree of pollution


Overvoltage category


consumed active power / at DC / maximum

2.5 W

surge voltage resistance

4 kV


65.1 mm


25.7 mm

number of slots


tightening torque / with screw-type terminals / minimum

0.4 N·m

tightening torque / with screw-type terminals / maximum

0.5 N·m

Type of auxiliary circuit connection

AWG18 / 750 mm

stripped length

10 mm

stripped length [in]

0.4 in

tightening torque [lbf·in] / with screw-type terminals / minimum

3.5 lbf·in

tightening torque [lbf·in] / with screw-type terminals / maximum

4.4 lbf·in

last modified:



There are no reviews yet.

Be the first to review “3VA9978-0BB11 Siemens Undervoltage 3VA Molded Case Circuit Breakers Original Brand New”
Shopping Cart