Rockwell Automation Low-Voltage Switchgear and Controlgear - Manual (Page 12)

Nature of
current Category Typical applications Relevant
IEC product
standard
AC-20A, AC-20B
AC-21A, AC-21-B
AC-22A, AC-22B
AC-23A, AC-23B
3)
Connecting and disconnecting under no-load conditions
Switching of resistive loads, including moderate
overloads
Switching of mixed resistive and inductive loads,
including moderate overloads
Switching of motor loads or other highly inductive loads
60947-3
a.c. AC-1
AC-2
AC-3
AC-4
AC-5a
AC-5b
AC-6a
AC-6b
AC-7a
AC-7b
AC-8a
AC-8b
Non-inductive or slightly inductive loads, resistance
furnaces
Slip-ring motors: starting, switching off
Squirrel-cage motors: starting, switching off motors
during running
Squirrel-cage motors: starting, plugging1), inching2)
Switching of electric discharge lamp controls
Switching of incandescent lamps
Switching of transformers
Switching of capacitor banks
Slightly inductive loads in household appliances and
similar applications
Motor-loads for household applications
Hermetic refrigerant compressor motor control with
manual resetting of overload releases
Hermetic refrigerant compressor motor control with
automatic resetting of overload releases
60947-4-1
AC-52a
AC-52b
AC-53a
AC-53b
AC-58a
AC-58b
Control of slip ring motor stators: 8 h duty with on-load
currents for start, acceleration, run
Control of slip ring motor stators: intermittent duty
Control of squirrel-cage motors: 8 h duty with on-load
currents for start, acceleration, run
Control of squirrel-cage motors: intermittent duty
Control of hermetic refrigerant compressor motors with
automatic resetting of overload releases: 8 h duty with
on-load currents for start, acceleration, run
Control of hermetic refrigerant compressor motors with
automatic resetting of overload releases: intermittent
duty
60947-4-2
AC-51
AC-55a
AC-55b
AC-56a
AC-56b
Non-inductive or slightly inductive loads, resistance
furnaces
Switching of electric discharge lamp controls
Switching of incandescent lamps
Switching of transformers
Switching of capacitor banks
60947-4-3
AC-12
AC-13
AC-14
AC-15
Control of resistive loads and solid-state loads with
isolation by optocouplers
Control of solid-state loads with transformer isolation
Control of small electromagnetic loads
Control of a.c. electromagnetic loads
60947-5-1
AC-12
AC-140
Control of resistive loads and solid state loads with
optical isolation
Control of small electromagnetic loads with holding
(closed) current
≤ 0,2 A, e.g. contactor relays
60947-5-2
AC-31A, AC-31B
AC-33A, AC-33B
AC-35A, AC-35B
AC-36A, AC-36B
3)
Non inductive or slightly inductive loads
Motor loads or mixed loads including motors, resistive
loads and up to 30 % incandescent lamp loads
Electric discharge lamp loads
Incandescent lamp loads
60947-6-1
LVSAM-WP001A-EN-P - April 2009 1-2