Motor Protection Electronics, Inc.
Motor Protection Electronics, Inc.
2464 Vulcan Rd.
Apopka, Florida 32703
Phone: 407-299-3825
Fax: 407-294-9435
Email: justin_logan@mpelectronics.com
Website: www.mpelectronics.com
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Duplex Alternator
MPE Alternating Relays are designed to perform automatic alternation motors or other types of loads, and are available in 120 VAC. The Alternator causes the loads to have even run times. The output relay contacts of the Alternating Sequence Relay change state each time the control switch is opened. Many wiring options are available for these Duplex Alternators as well as these hardware options for the Sequencer: (1) A lead/lag/automatic selector switch and (2) A push-to-test switch for added convenience or trouble shooting.
Alternators (008-120-13SP)
Unit of Measure
Items Alternators (008-120-10)
008-120-10
120 Volt (V) Alternating Current (AC) Operating Voltage Alternator
List Price $110.35
 Item Image - Alternators (008-024-10)
008-120-10S
120 Volt (V) Alternating Current (AC) Operating Voltage Alternator
List Price $123.15
 Item Image - Alternators (008-024-10)
008-120-10SP
120 Volt (V) Alternating Current (AC) Operating Voltage Alternator
List Price $153.00
 Alternators (008-120-11)
008-120-11
120 Volt (V) Alternating Current (AC) Operating Voltage Alternator
List Price $106.00
 Alternators (008-120-11)
008-120-11S
120 Volt (V) Alternating Current (AC) Operating Voltage Alternator
List Price $118.80
Description N/A

Small Case Version
The 008-120-10 series of alternators were designed for automatic duplex control of motors or other types of loads. They are available in a single phase voltage of 120 VAC. When power is applied to the alternator, the output relay contacts change state each time the control voltage is disconnected.

 		N/A

Small Case Version
The 008-120-10 series of alternators were designed for automatic duplex control of motors or other types of loads. They are available in a single phase voltage of 120 VAC. When power is applied to the alternator, the output relay contacts change state each time the control voltage is disconnected. The "S" Version has the option of a lead/lag/automatic selector switch.

 		N/A

Small Case Version
The 008-120-10 series of alternators were designed for automatic duplex control of motors or other types of loads. They are available in a single phase voltage of 120 VAC. When power is applied to the alternator, the output relay contacts change state each time the control voltage is disconnected. The "SP" Version has two options: (1) a lead/lag/automatic selector switch and (2) a push-to-test switch for added convenience in testing or trouble shooting.

 		N/A

Small Case Version
The 008-120-11 series of alternators were designed for automatic duplex control of motors and other types of loads. They are available in a single phase voltage of 120 VAC. When power is applied to the alternator, the cross-wired DPDT output relay contacts change state each time the control voltage is disconnected.

 		N/A

Small Case Version
The 008-120-11 series of alternators were designed for automatic duplex control of motors and other types of loads. They are available in a single phase voltage of 120 VAC. When power is applied to the alternator, the cross-wired DPDT output relay contacts change state each time the control voltage is disconnected. The "S" Version has the option of a lead/lag/automatic selector switch.
Options N/A Standard Unit N/A Lead/Lag Select N/A Lead/Lag Select Push-To-Test N/A Standard Unit N/A Lead/Lag Select
Underwriter's Laboratories (UL) File Number N/A #E101681
Product Type N/A 1 Phase, Plug in Alternator
Alternating Current (AC) Operating Voltage N/A 120 V
Power on Pins N/A N/A N/A N/A 3 6 N/A 3 6
Relay and Base Type N/A SPDT, 8 Pin Octal Base N/A SPDT, 8 Pin Octal Base N/A SPDT, 8 Pin Octal Base N/A DPDT, Cross Wired 8 Pin Octal Base N/A DPDT, Cross Wired 8 Pin Octal Base
Base Configuration/Relay Type N/A 8 Pin, SPDT N/A 8 Pin, SPDT N/A 8 Pin, SPDT N/A 8 Pin, DPDT Cross Wired N/A 8 Pin, DPDT Cross Wired
Alternating Current (AC) Supply Voltage N/A 120 V
Supply Phase N/A Single Phase
Supply Frequency N/A 50/60 Hz
Output Current Rating
at Operating Voltage 		N/A 10 A
Power Dissipation N/A < 1 Watt
Case Size N/A Short
Operating Temperature N/A -20 to +60 ºC
Storage Temperature N/A -45 to 85 ºC
Enclosure Material N/A Polycarbonate Plastic
Base Material N/A Phenolic
Features N/A
  • Solid State Circuitry
  • Surge Protected
  • Replaces Mechanical Types
  • Plug In Base
  • Economical, Easy to Install
  • Lead/Lag/Auto Select Switch Option
  • Push-To-Test Switch Option
Installation Instruction N/A
  1. Connect pins 3 and 4 of the alternator to a single phase AC supply as shown in the installation diagram above.
  2. The hot side of the AC voltage is connected to one side of the control switch and to pins 1 and 4 of the alternator. The opposite side of the control switch is connected to pin 5 of the alternator.
  3. One side of each contactor coil is connected to either pin 2 or 8 of the alternator depending upon the user preference for Lead/Lag designation.
  4. The neutral side of the AC supply is connected to pin 3 of the alternator and to the opposite sides of the contactor coils.
 		N/A

A single phase AC line and properly rated light bulbs are needed to test any alternator in the M.P.E. product line.

  1. The AC line and light bulbs must be connected to the alternator as shown in the test method diagram above.
  2. When the control switch is operated, the light bulbs will alternate on and off.
 		N/A
  1. Connect pins 3 and 4 of the alternator to a single phase AC supply as shown in the installation diagram above.
  2. The hot side of the AC voltage is connected to one side of the control switch and to pins 1 and 4 of the alternator. The opposite side of the control switch is connected to pin 5 of the alternator.
  3. One side of each contactor coil is connected to either pin 2 or 8 of the alternator depending upon the user preference for Lead/Lag designation.
  4. The neutral side of the AC supply is connected to pin 3 of the alternator and to the opposite sides of the contactor coils.
 		N/A
  1. Connect pins 3 and 6 of the alternator to a single phase AC supply as shown in the installation diagram above.
  2. The hot side of the AC voltage is connected to one side of each control switch and pin 3 of the alternator. The opposite side of the control switches can be connected to either pin 1 or 2 of the alternator depending upon the user preference for Lead/Lag designation.
  3. One side of each contactor coil is connected to either pin 7 or 8 of the alternator depending upon the Lead/Lag designation determined in step 2. The opposite sides of the contactor coils are both connected to pin 6 of the alternator, the neutral side of the AC supply.
 		N/A
  1. Connect pins 3 and 6 of the alternator to a single phase AC supply as shown in the installation diagram above.
  2. The hot side of the AC voltage is connected to one side of each control switch and pin 3 of the alternator. The opposite side of the control switches can be connected to either pin 1 or 2 of the alternator depending upon the user preference for Lead/Lag designation.
  3. One side of each contactor coil is connected to either pin 7 or 8 of the alternator depending upon the Lead/Lag designation determined in step 2. The opposite sides of the contactor coils are both connected to pin 6 of the alternator, the neutral side of the AC supply.
Test Method N/A

A single phase AC line and properly rated light bulbs are needed to test any alternator in the M.P.E. product line.

  1. The AC line and light bulbs must be connected to the alternator as shown in the test method diagram above.
  2. When the control switch is operated, the light bulbs will alternate on and off.
 		N/A

A single phase AC line and properly rated light bulbs are needed to test any alternator in the M.P.E. product line.

  1. The AC line and light bulbs must be connected to the alternator as shown in the test method diagram above.
  2. When the control switch is operated, the light bulbs will alternate on and off.
 		N/A

A single phase AC line and properly rated light bulbs are needed to test any alternator in the M.P.E. product line.

  1. The AC line and light bulbs must be connected to the alternator as shown in the test method diagram above.
  2. When the control switch is operated, the light bulbs will alternate on and off.
 		N/A

A single phase AC line and properly rated light bulbs are needed to test any alternator in the M.P.E. product line.

  1. The AC line and light bulbs must be connected to the alternator as shown in the test method diagram above.
  2. When the control switches are operated, the light bulbs will alternate on and off.
 		N/A

A single phase AC line and properly rated light bulbs are needed to test any alternator in the M.P.E. product line.

  1. The AC line and light bulbs must be connected to the alternator as shown in the test method diagram above.
  2. When the control switches are operated, the light bulbs will alternate on and off.