ABB Electrical S5H-D Circuit Breaker

ABB Electrical S5H-D Circuit Breaker

Basic Parameters

Number of poles: 3 poles.

Rated current: 400A.

Rated voltage: 600VAC, 600VDC.

Size: about 5.5 inches × 13.7 inches × 4.0 inches, that is, 14.0cm × 34.8cm × 10.2cm.

Weight: 11 pounds 16.0 ounces, or 5.4kg.

Functional features

Short-circuit protection: When there is a short-circuit fault in the circuit, and the short-circuit current exceeds its set value of disconnecting current, the circuit breaker can act quickly to cut off the circuit, thus protecting the lines and equipment from overload damage.

Overload protection: detecting the current in the circuit through thermal magnetic release or electronic release, when the current exceeds the rated current for a long time, it will trigger the release action, preventing the lines and equipment from being damaged due to prolonged overload operation.

Isolation function: When overhauling or maintaining the circuit, the circuit breaker can be disconnected to isolate the circuit from the power supply and ensure the safety of the operators.

Application field

Industrial field: It can be used for the protection of various motors, transformers, capacitors and other equipments in factories, as well as the feeder protection of industrial distribution cabinets, to ensure the stable operation of electrical equipments in the process of industrial production.

Commercial places: such as shopping malls, office buildings and other places in the electrical system, for the protection of lighting, sockets and other power distribution lines, to ensure the safety and reliability of commercial power.

Other fields: can also be used in ships, coal mines, substations and other places of the electrical system, for all kinds of electrical equipment to provide reliable protection.

The transfer sequence of OTM_C21D can be summarized in following steps: 

• An anomaly occurs on the Line 1 (LN1) 

• Generator start, immediately start generator in case of black-out, phase-loss, overvoltage or undervoltage (If Generator mode is selected) 

• The Line 2 start the normal functioning,  transfer delay Ts 

• Change-over switch (Switch I) to the position 0 

• Change-over switch (Switch II) to the  position II

And the return sequence can be summarized in  the following steps: 

• The Line 1 will start the normal functioning 

• Change-over switch stays in position II 

• An anomaly occurs on the Line 2 (LN2) 

• Change-over switch stays in position II 

• Change-over switch can be transferred  manually back to position I

The following analyzers are available for selection:  

• Uras26 infrared photometer  for the measurement of infrared-active gas components,  e.g. CO, NO, SO2 

• Limas23 ultraviolet photometer  for the measurement of NO, NO2 and SO2 

• Magnos206 oxygen analyzer  for the measurement of O2 in process gas or in N2 

• Magnos28 oxygen analyzer  for the measurement of O2 in process gas or in N2 

• Magnos27 oxygen analyzer  for the measurement of O2 in flue gas or in N2 

• ZO23 trace oxygen analyzer  for the measurement of O2 in pure gases (N2, CO2, Ar)  

• Caldos27 thermal conductivity analyzer  for the measurement of binary gas mixtures with different  thermal conductivity, e.g. Ar in O2, H2 in Ar, CH4 in N2 

• Fidas24 flame-ionization detector  for the measurement of hydrocarbons  

• Electrochemical oxygen sensor  for the measurement of O2