The A1P is a proportional, infinitely variable power controller capable of delivering 0-97% of the applied line voltage to the directly connected electric heaters. The A1P will not control transformers or motors. This is accomplished by phase angle firing a pair of inversely connected SCR's. Modular construction allows for simple and solderless field serviceability. There are four field replaceable items:
  • Printed circuit board
  • Fuse
  • Dual SCR package
  • MOV (metal oxide varistor)
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Item #

Item Name

Voltage Designations

Load

Output Voltage

Control Signal

N/A A1P-48-200, 48 Volt (V), 200 Ampere (A) Load SCR Power Controller N/A 480 VAC 50/60 Hz N/A 200 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-48-225, 48 Volt (V), 225 Ampere (A) Load SCR Power Controller N/A 480 VAC 50/60 Hz N/A 225 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-48-250, 48 Volt (V), 250 Ampere (A) Load SCR Power Controller N/A 480 VAC 50/60 Hz N/A 250 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-48-350, 48 Volt (V), 350 Ampere (A) Load SCR Power Controller N/A 480 VAC 50/60 Hz N/A 350 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-48-600, 48 Volt (V), 600 Ampere (A) Load SCR Power Controller N/A 480 VAC 50/60 Hz N/A 600 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-30, 60 Volt (V), 30 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 30 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-40, 60 Volt (V), 40 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 40 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-60, 60 Volt (V), 60 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 60 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-80, 60 Volt (V), 80 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 80 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-100, 60 Volt (V), 100 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 100 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-150, 60 Volt (V), 150 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 150 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-200, 60 Volt (V), 200 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 200 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-225, 60 Volt (V), 225 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 225 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-250, 60 Volt (V), 250 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 250 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-350, 60 Volt (V), 350 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 350 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
N/A A1P-60-600, 60 Volt (V), 600 Ampere (A) Load SCR Power Controller N/A 575 to 600 VAC 50/60 Hz N/A 600 AMPS N/A 0 to 97% of input voltage N/A 4 to 20 mA at 5 volts DC, 250 Ohms
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