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HomeProducts Controllers Watlow Controllers Power Switching Devices Watlow DIN-A-MITE® C SCR Power Controller

Watlow DIN-A-MITE® C SCR Power Controller

up to 80 amps
Watlow DIN-A-MITE® C SCR Power Controller
The DIN-A-MITE® C silicon controlled rectifier (SCR) power controller provides a low cost, compact and versatile solid state option for controlling electric heat. This controller is designed and manufactured with the quality features expected from Watlow®. DIN-rail, panel mount and through-wall mount versions are available.

Features include single-phase, three-phase/two leg, and three-phase/three leg, 24-600VAC operation. Current switching capabilities range from 30 to 80A depending on the model ordered.

Variable time-base, linear voltage and current process control or VAC/VDC input contactor versions are available. Single phase, phase angle firing and current limiting are also available. All options are model number dependent and factory configurable. This power controller includes 200KA short circuit current rating (SCCR) tested up to 480VAC to minimize damage in the event of a short circuit when used with required fusing.

User Manual (EN)
Manuel de l'Utilisateur (FR)
Manual del Usuario (ES)

Watlow: Your Heat Solutions Resource Brochure (EN)
Watlow: Vos Solutions de Chauffage Brochure (FR)
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Features
Specifications
Ordering information
Resources
Applications

Product Features

200KA SCCR with proper fusing
  • Minimizes damage in the event of a short circuit
DIN-rail, panel and through-wall mounting
  • Provides versatility and quick, low-cost installation
Compact size
  • Reduces panel space and cost
Touch-safe terminals
  • Increases safety for installer and user
One- and three-phase power
  • Can be used in a variety of applications
Open heater/shorted output alarm
  • Notifies the user in case of an open heater or shorted output
Mercury free
  •  Assures environmental safety
Faster switching with solid state
  •  Saves energy and extends heater life
UL® 508 listed, C-UL®, RoHS 2 and CE with filter
  • Meets applications requiring agency approval
  • Reduces end product documentation cost
System solution component
  • Provides single source thermal loop
Back-to-back SCR design
  • Ensures a rugged design

Product Specifications

Operator Interface:
  • Control input and indication light
  • Alarm output and indication light
  • Current limit indication LED
Amperage Rating:
  • See output rating curves on the next page
  • Max. surge current for 16.6ms, 1,350A peak
  • Max. I2t for fusing is 9100A2s
  • Latching current: 500mA max.
  • Holding current: 200mA max.
  • Fan current: 0.14A for 24VDC; 0.12A for 120VAC; 0.06A for 240VAC
  • Off-state leakage 1mA at 77°F (25°C) max.
  • Power dissipation: 1 watt per ampere per leg switched
  • 200KA SCCR, Type 1 and 2 approved with the recommended fusing; see user manual
Line Voltage:
  • 24 to 48VAC units: 20.4VAC min. to 53VAC max.
  • 100 to 240VAC units: 48VAC min. to 265VAC max.
  • 277 to 600VAC units: 85VAC min. to 660VAC max.
  • 100 to 120VAC, 200 to 208VAC, 230 to 240VAC, 277VAC, 400VAC, 480VAC, 600VAC, +10/-15%, 50 to 60Hz independent ±5% (control options L, P and S)
Alarms (zero cross models only) Shorted SCR Alarm Option:
Alarm state when the input command signal is off and a 10A or more load current is detected by the current transformer (two turns required for 5A and three turns for 2.5A)
Open Heater Alarm Option (Control Option S only):
Alarm state when the input command signal is on and the load current detected by the current transformer is 20% less than customer adjusted set point
Alarm Output:
  • Energizes on alarm, non-latching
  • Triac 24 to 240VAC, external supply with a current rating of 300mA @ 77°F (25°C), 200mA @ 122°F (50°C), 100mA @ 176°F (80°C) and a holding current of 200μA with a latching current of 5mA typical
Agency Approvals:
  • CE with proper filter: 204/108/EC electromagnetic compatibility directive EN 61326-1: industrial immunity Class A emissions not suitable for Class B environments Phase angle and phase angle with current limit (control options P and L) are not CE approved for conducted or radiated emissions 2006/95/EC low voltage directive EN 50178 safety requirements installation category III, pollution degree 2
  • UL® 50 Type 4X enclosure, Class 1, Div. 2 per ANSI/ISA 12.12.01. Through-wall heat sink models T4 File 184390
  • UL® 508 listed and C-UL® File E73741
  • 2011/65/EU RoHS 2
  • Shock and vibration tested to IEC 60068-2-32
  • Vibration tested to IEC 60068-2-6
Control Input Terminals:
  • Compression: will accept 24 to 16 AWG (0.2 to 1.5 mm2) wire
  • Torque to 4.4 in. lb (0.5 Nm) max. with a 1/8 in. (3.5 mm) blade screwdriver
Line and Load Terminals:
  • Compression: will accept 14 to 3 AWG (2.5 to 25 mm2) wire
  • Torque to 24 in. lb (2.7 Nm) max. with a 1/4 in. (6.4 mm) blade screwdriver, or a type 1A, #2 Pozi driver
Operating Environment:
  • See the output rating curve chart on next page
  • 0 to 90% RH (relative humidity), non-condensing
  • Storage temperature: -40 to 185°F (-40 to 85°C)
  • Operating temperature: -29 to 176°F (-34 to 80°C)
  • Insulation tested to 3,000 meters
DIN-Rail Mount:
DIN EN 50022, 35 mm by 7.5 mm
Back-Panel Mount:
Four mounting holes No. 6 to No. 8 (M3 to M4) fastener
Through-Wall Mount:
See page 4 for through-wall panel cutout (Note: Mount cooling fins vertically.)
Additional Specifications for Contactors and Time Proportional Controllers:
  • Control Mode, Zero-Cross: Control option C: VDC input, contactor output
  • Control option K: VAC input, contactor output
  • To increase service life on contactor models, the cycle time should be less than three seconds
  • Control option F: 4 to 20mA DC input, variable time-base control output
Control Input:
  • AC contactor: 24VAC ±10%, 120VAC +10/-25%, 240VAC +10/-25% @ 25mA max. per controlled leg
  • DC contactor: 4.5 to 32VDC: max. current @ 4.5VDC is 6mA per leg, add 2mA per LED used to the total current
  • Loop powered linear current 4 to 20mA DC: loop-powered, control option F0 only (requires current source with 8.0VDC available, no more than two DIN-A-MITE inputs can be connected in series)
Additional Specifications for Phase Angle, Phase Angle with Current Limit, and Single-Cycle, Variable Time-Base:
  • Operation: With control option S (single-cycle, variable time-base) the output is not on for more than one consecutive AC cycle below 50% power and not off for more than one consecutive AC cycle above 50% power
  • Phase angle control, single-phase only
Control Input:
  • 0 to 20mA, 4 to 20mA, 0 to 5VDC, 1 to 5VDC and 0 to 10VDC
  • Input impedance 250Ω for 4mA to 20mA, 5kΩ for linear voltage input
Output Voltage:
100 to 120VAC, 200 to 208VAC, 230 to 240VAC, 277VAC, 400VAC, 480VAC and 600VAC, ±10%
Linearity (Control Option S):
±5% input to output power over 0 to 100% of span between calibration points
Linearity (Control Options P and L):
±5% input to output power, as referenced to a sinusoidal power curve, between calibration points
Resolution:
Better than 0.1% of input span with respect to output change
Soft Start (Control Options P and L):
  • Typically: 5 second soft start on power up
  • Soft start on thermostat over temperature
  • Soft start on 1/2 cycle drop out detection
  • 1 second soft start on set point change
Options:
  • Manual control kit (1kΩ potentiometer) 08-5362
  • Alarm option is not available on control options P or L

Ordering information