Features
  • Single phase 300-1650 amps, 
  • Up to 690Vac max. 
  • Resistive or complex loads 
  • Load diagnostics
The TC1027 and TC1028 provide simple, safe and compact high current power control for both resistive and complex single phase loads. Voltage feedback compensation for supply variations is standard. Internal fusing is optional. TC1027—available as a solid state contactor or a burst fired SCR assembly that is optimized for resistive control from 300A to 500A at 120Vac to 500Vac. The SSC version accepts a DC or AC logic input and the SCR version accepts a selectable DC analog input or local potentiometer control.  TC1028—compact single phase high current SCR assembly that provides enhanced control performance for resistive and complex loads up to 1650A and 690V. The TC1028 is rich in control features, with selectable inputs and firing modes and retransmission, PLF, current limit, fuse fail detection, and others. It accepts the Model 260 diagnostic unit for testing and troubleshooting. The unit is available in its standard configuration up to 1200A. At 1650A (and optionally from 750A to 1200A), the unit must be split into a separate SCR assembly and driver unit (MC1028).

TECHNICAL SPECIFICATIONS

Ratings:  TC1027: 300A, 400A and 500A
120V, 230V, 240V, 400V, 440V, 
480V and 500V
TC1028: 300A, 400A, 500A, 750A, 900A, 
1200A, and 1650A
100V, 110V, 115V, 120V, 200V, 220V, 
230V, 240V, 277V, 380V, 400V, 415V, 
440V, 480V, 500V and 690V
Dimensions (mm): Up to 500A: 570H x 133W x 268D; 10kg
750A: 560H x 373W x 510D
900A/1200A: 560H x 381W x 510D 
1650A: 600H x 422W x 302D
Load type:  TC1027: resistive 
TC1028: resistive (fixed or variable),
transformer coupled or inductive
Firing mode: TC1027: fast cycle with supply voltage compensation. 
TC1028: fast cycle, single cycle, slow cycle, 
fast or slow cycle with soft start, and phase angle (with current limit)
Operating temp: 0°C to 45°C, 5%-95% RH, non-condensing
Mounting: Panel mounting
Inputs: TC1027: DC Logic-voltage: 10V (>5V ON: <1V 
OFF), input impedance 390˛
DC Logic-current: 20mA (>4mA ON: 
<0.2mA OFF), input impedance 390˛
AC Logic-voltage: 100V to 264V (>85V 
ON: <10V OFF), input impedance 10K
DC Voltage: 0-5V, 1-5V, 0-10V, 2-10V (impedance 68K)
DC Current: 0-20mA, 4-20mA (impedance 250˛)
TC1028: DC Voltage: 0-5V, 1-5V, 0-10V, 2-10V (impedance 50K)
DC Current: 0-20mA, 4-20mA (impedance 250˛)