Here is a comprehensive compilation of information regarding the Beijing Sim尔顿 (possibly "Sim尔顿" or a similar brand) H375, H380, 3100, 3120, 3200, 3400 series Solid State Relays (SSR) for your reference:
I. Brand and Series Background
Brand Confirmation: Please verify if it is "Beijing Sim尔顿" (there may be spelling errors, such as "Sim尔顿" or "Si 孟顿" etc.)
Series Coverage: The H series (such as H375, H380) and the 3000 series (3100, 3120, 3200, 3400) may represent solid-state relays for different application scenarios or technical specifications.
Section II: Common Solid State Relay Parameters
| Model | Load Current | Load Voltage | Control Method | Features |
| ------| ----------| ----------| ----------| --------------------|
| H375 | 75A | 24V 480VAC | DC/AC Control | High Current, Heat Dissipation Design |
| H380 | 80A | 24V 480VAC | DC/AC Control | Industrial High Reliability |
| 3100 | 10A | 24-240VAC | DC control | Basic, Economical |
| 3120 | 20A | 24V 240VAC | DC Control | Moderate Load, Compact Design |
| 3200 | 40A | 24V 480VAC | DC Control | High Voltage, Industrial Automation |
| 3400 | 60A | 24V 480VAC | DC/AC Control | Multi-functional, Zero-Crossing Trigger |
III. Key Selection Points
1. Current and voltage
Select based on the rated current and voltage of the load, and reserve an additional 20% to 30%.
For example, H380 is suitable for loads below 80A, while 3400 is for high-frequency switching applications below 60A.
2. Control Signal
DC control (e.g., 3-32VDC) or AC control (e.g., 90-250VAC), a matching control circuit is required.
3. Trigger Method
Random triggering: Suitable for resistive loads (such as heaters).
Zero-cross triggering: Suitable for capacitive/reactive loads (such as motors, transformers), reducing surges.
4. Installation and Heat Dissipation
High current models (such as H375/H380) require a radiator or forced air cooling.
Note the installation direction (avoid vertical installation to affect heat dissipation).
Section 4: Application Scenarios
Industrial Control: PLC Interface, Motor Drive (3200/3400 Series).
Thermal Control System: Electric furnaces, heaters (3100/3120 random trigger models).
Power Equipment: Reactive Power Compensation, Power Supply Transfer (H series high current models).
V. Cautionary Notes
1. Brand Verification: Confirm if it is "Sim尔顿" or a similar brand
2. Circuit Protection: It is recommended to add a fast-blow fuse and an RC snubber circuit (especially for inductive loads).
