ABB Electrical OS30ACC12 Disconnect Switch

ABB Electrical OS30ACC12 Disconnect Switch

Basic Parameters

Rated current: 30A.

Rated voltage: 600V.

Number of poles: 3 poles.

Fuse rating: CC class.

Performance characteristics

High safety: Equipped with fuse, when overload or short circuit occurs, the fuse can fuse in time to cut off the circuit, protect the equipment and personnel safety, and prevent the fault from expanding.

Reliable isolation function: it can effectively isolate the power supply from the load to ensure the safety of the operator during equipment maintenance, overhaul or troubleshooting, and to prevent damage to the equipment caused by accidental energisation.

Compact design: its compact structure, small size, occupies less space, easy to install and wire in a variety of electrical control cabinets, distribution boxes and other limited space, improving the space utilisation rate.

Strong versatility: in line with relevant international standards and certifications, such as UL 98, etc., with good versatility and compatibility, can be widely used in different electrical systems and equipment.

Convenient operation: The operating mechanism is simple and reliable, the operating force is moderate, it is easy to carry out opening and closing operations, and it has clear opening and closing indications, which is convenient for the operator to understand the status of the switch intuitively.

Fields of application

Industrial control: in all kinds of industrial production equipment, such as motor control centres, power distribution boxes of production lines, etc., it is used to cut off the power supply of motors, heaters, controllers and other equipment, so as to carry out maintenance, overhauling or troubleshooting of the equipment.

Commercial buildings: It can be applied in the electrical system of commercial buildings, such as shopping malls, office buildings, hotels, etc., as the isolation switch of branch circuits, controlling the power supply of lighting, sockets, air conditioning and other loads, ensuring the safe operation and maintenance convenience of the electrical system.

Data centre: Data centre has many electrical equipments, which requires high reliability and safety of power supply. OS30ACC12 isolation switch can be used to isolate the power supply of server cabinets, UPS power supply, air-conditioning system and other equipments, to ensure that the normal operation of other equipments won't be affected during equipment maintenance or troubleshooting, and to guarantee the continuous and stable operation of the data centre.

Photovoltaic power generation system: In the photovoltaic power generation system, it can be used to isolate the power supply of photovoltaic arrays, inverters, convergence boxes and other equipment, which is convenient for system installation, debugging, maintenance and troubleshooting, and improves the safety and maintainability of the photovoltaic power generation system.

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