Wattcor W211 / W212: Power Solid State Relays
More Information
high power solid state relays, "zero crossing" switching
The Wattcor W211 / 212 line offers highly reliable solid state power control with "zero crossing" switching up to 600A / 660Vac for resistive loads.
The units are ideally suited for repetitive, wear and tear free switching of heater banks.
The most outstanding features of these switches are low heat dissipation and compact, space saving construction.
contact us to discuss your requirements.
Wattcor W211
The W211 is triggered by a logic signal (5-30 VDC or Vac). Three phase loads can be controlled by two or three W211 units.
Wattcor W212
The W212 is controlled by an analogue signal
(0-5V, 0-10V, 0 / 4-20mA) or potentiometer.
High Power Solid State Relays: Wattcor W211 / 212
The output switches in bursts ("zero crossing" switching) and the duty cycle of these High Power Solid State Relays is proportional to the input signal. The cycle time of the output can be adjusted by a trimmer incorporated in the unit.
Three phase loads can be controlled by using one W212 as master and one or more W211 as slaves. The master unit synchronizes the slave units.
Wattcor High Power SSRs: Benefits
- Compact construction, space saving
- Low power dissipation (1.2W / A)
- Zero crossing switching
- Logic "Power disabled" input
- "RPC" (optional) partial load failure detection
- "DTC" (optional) short circuit or current failure detection
- "DE" (optional) electronic overload protection up to 13x
- nominal current Alarm relay output for fault conditions
- Internal fuse with fuse failure output (on 250A and 600A units)
- DIN-rail mounting (25A to 150A units)
- Panel mounting (250A to 600A units
Contact us to discuss your High Power SSR requirements
Technical Information
- Nominal working voltage:660Vac (max. range 20...725Vac)
- Nominal frequency: 50/60Hz
- Current Ratings (50°C):
| Model | Repetitive overcurrent (t=1s) |
Non-repetitive overcurrent (t=20ms) |
Model | ²t for fusing (t=1-10s) |
Critical dv/dt with output de-activated | ||
| 25Arms | ≤ 74A | ≤ 600A | 25Arms | 1800A²s | 1000V/μs | ||
| 40Arms | ≤ 100A | ≤ 1500A | 40Arms | 11200²s | 1000V/μs | ||
| 75Arms | ≤ 180A | ≤ 1700A | 75Arms | 14450A²s | 1000V/μs | ||
| 100Arms | ≤ 300A | ≤ 4800A | 100Arms | 86200A²s | 1000V/μs | ||
| 150Arms | ≤ 300A | ≤ 4800A | 150Arms | 86200A²s | 1000V/μs | ||
| 250Arms | ≤ 450A | ≤ 7800A | 250Arms | 200000A²s | 1000V/μs | ||
| 400Arms | ≤ 2000A | ≤ 15000A | 400Arms | 1125000A²s | 500V/μs | ||
| 600Arms | ≤ 2000A | ≤ 15000A | 600Arms | 1125000A²s | 500V/μs |
Temperature Derating Curves
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High Power Solid State Relays
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