Solid state relays (SSRs) are used for switching resistive and inductive loads and outperform the conventional mechanical relays with great advantages. The life cycle with millions of operations, the high switching speed without mechanical or electrical noise, no dangerous sparks or wearing, and the low power needed for switching make the solid state relays a perfect choice when high control accuracy is fundamental.
| To Order the model below click on model number (or scroll to the top of the page and select option from drop down box) then click on and ADD TO CART button |
| PART NUMBER | DESCRIPTION |
| SSR-4810 | SSR with 10A ac max. load current |
| SSR-4825 | SSR with 25A ac max. load current |
| SSR-4840 | SSR with 40A ac max. load current |
| SSR-4860 | SSR with 60A ac max. load current |
SPECIFICATIONS
| Parameter | SSR-4810,SSR-4825,SSR-4840 | SSR 4860 |
| Load voltage | 75-480Vrms | 40-480Vrms |
| Load turn-on voltage | 1.1 to 1.5 Vrms | 1.1 to 1.5 Vrms |
| Load leakage current | 14 mArms | <5 mArms |
| Load frequency | 47 to 70Hz | 47 to 63Hz |
| dv/dt | 50 to 200V/μs | 300V/μs |
| Control current | 4 to 32Vdc | 3 to 32Vdc |
| Switching time | <10ms | <10ms |
| Control method | Zero cross trigger | Zero cross trigger |
| Isolation | 4000Vrms | 2000Vrms |
| Operating temperature | -30 to 80°C | -40 to 80°C |
Heat Dissipation
The SSR generates heat during its conduction. This heat must be dissipated to avoid SSR failure due to over-heating. The nominal SSR load specification assumes the use of a suitable heat sink. Without a heat sink the allowed load current is substantially reduced. The user may calculate the needed heat sink (please see user manual) or use the suggested heat sink. For better heat transfer, a thermally conductive paste must be used between the SSR and the heat sink.
