Page 985 - ABB_Motor _Protection_and_Control_catalogue_20221216

ABB MOTOR PROTECTION AND CONTROL 10/11

Identification number A, C, D, E or F is assigned as a refer- • US Motor Minimum Efficiency Performance Standards
ence by the submitter for each combination motor controller Most of 3-phase industrial motors are required to meet
(CMC) construction or rating: the efficiencies listed in ANSI/NEMA MG-1, table 12-1x
(NEMA Premium® efficiency).
- Type A fusible combination: Following motor efficiency classes are typically known:
disconnector, fuse, contactor and overload relay - Super Premium Efficiency (comparable to IEC IE4)
- Type C MCCB combination: - Premium Efficiency (comparable to IEC IE3)
inverse-time circuit breaker, contactor and overload relay - High Efficiency (comparable to IEC IE2)
- Type D MCP (magnetic only) combination: - Standard Efficiency (comparable to IEC IE1).
instantaneous-only circuit breaker, contactor and over-
load relay
- Type E: UL Component ratings
Self protected combination motor controller Components used within combination motor controllers are
- Type F: required to have individual component ratings tested and
Self protected combination motor controller: manual certified according to the appropriate UL Standard for that
motor starter and contactor component.
Motor efficiency class and design type The results of this testing show the UL Listed/Recognized
IEC coordination tables are displayed for IE1, IE2, IE3 and IE4 motor product provides a safe and code-compliant installation
efficiency classes in regards with N/H or NE/HE motor design use: when installed according to the manufacturer’s instructions.
• asynchronous IE1/IE2/IE3/IE4 motors may be of the de- In this case, a safe installation means that the installation
sign N or H has been found to be reasonably free of the risk of fire, elec-
• asynchronous IE3/IE4 motors may be of the design NE or tric shock and other hazards to public health.
HE,
having extended / locked rotor apparent power and current Each component must be appropriately labeled:
than design N and H motors. - Company name and model number
- Identification of the specific component in the combination
• International Efficiency (IE) classes for single speed electric motor controller.
motors IEC 60034-30-1:2014 standard defines four Interna-
tional Efficiency (IE) classes for single speed three-phase Individual component ratings:
cage rotor induction motors designed for operation on sinu- - HP: Horsepower rating for component, if provided
soidal voltage: - kA: Marked short-circuit current rating (SCCR) on individual
- IE4 = Super premium efficiency component
- IE3 = Premium efficiency - Max Amps: Maximum ampere rating of individual compo-
- IE2 = High efficiency nent
- IE1 = Standard efficiency - V: Voltage rating of individual component
• Motor design N/H and NE/HE
IEC 60034-12:2016 standard defines motor design categories
as below: For additional information, please
consult our application note
- Design N
Normal starting torque with normal locked rotor current
- Design H
High starting torque with normal locked rotor current
- Design NE
Normal starting torque with higher locked rotor current
- Design HE
High starting torque with higher locked rotor current.

For additional information, please consult our application
note for NEMA Premium® Efficiency motor starting
14