📋 Specification
| Item | Value |
| Brand Name | other |
| Model Number | SSR-40DA-H,SSR-50DA-H,SSR-75DA-H,SSR-40DA |
| Mounting Type | None |
| Place of Origin | None |
| Description | Single-phase solid state relay |
| Type | Single-phase solid state relay |
| Relay Type | Solid State Relay |
| Contact Form | Normally Opening |
❓ FAQ
1. What is a Solid State Relay (SSR)?
An SSR is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals, allowing for efficient power control without moving parts.
2. What are the advantages of using an SSR?
SSRs offer high-speed switching, noiseless operation, resistance to shock and vibration, and a significantly longer operational lifespan compared to traditional electromechanical relays.
3. How do I select the right SSR?
When selecting an SSR, consider your load requirements, including load voltage, maximum current capacity, control voltage signal, and whether your application requires zero-crossing or random-turn-on switching.
4. Can I use this relay for inductive loads?
Yes, but it is important to ensure the relay is rated appropriately for the surge current typical of inductive loads and to use protective devices like varistors or snubber circuits.
5. What is the significance of the "Normally Opening" contact form?
A "Normally Open" (NO) SSR remains in the 'OFF' state when no control voltage is applied. It completes the circuit and conducts electricity only when the control signal is activated.
6. Does the SSR require a heat sink?
Yes, for optimal performance and to prevent overheating, especially when operating at high current capacities, mounting the SSR on a suitable heat sink is recommended.
UniWave Electric
