Reduced Voltage Starters
Description, A9 - A750 Overload relay protection
Maximum UL/CSA horsepower ratings
Available with ABB non-fusible or fusible disconnect switches and MCP, thermal magnetic or electronic trip type circuit breakers
Compact space saving design
Standard auxiliary contact configurations: A9 - A40 1 N.O. or 1 N.C. A50 - A750 1 N.O. & 1 N.C.
Double break contact design
Lowest possible contact bounce
Early make & late break auxiliary contacts available
Operates over an extended voltage range of 85% to 110% of rated control voltage
UL listed
Starters, sizes A9 - A185, have Class 10 adjustable thermal bimetallic overload relay protection as standard.
Sizes A210 - A750, have selectable Class 10, 20, 30 adjustable electronic overload relay protection as standard.
Electronic overload relay protection is available for other starter sizes.

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Reduced voltage starters .......................................................................... Section 3.71-3.92

Additional auxiliary contact blocks 3.73
Auto-transformer, non-combination type 3.74 - 3.75
Catalog numbering information 3.72
Circuit diagrams 3.82 - 3.83
Control circuit transformers 3.73
Control cover accessories 3.73
Description 3.71
Dimensions 3.84 - 3.91
Factory modifications 3.73
Hazardous location enclosure accessories, NEMA 7 & 9 3.73
Overload relay protection 3.71
Part winding, non-reversing 3.80 - 3.81
Reduced voltage & multi-speed starters 3.73
Special modifications 3.73
Wye-delta, closed transition 3.78 - 3.79
Wye-delta, open transition 3.76 - 3.77