قائمة الطعام
احصل على عرض أسعار

مرحلات الحالة الصلبة

  • The best solid state relay suppliers in China
  • Low MOQ required
  • Up to 200 products to choose from
  • Two-year long warranty
احصل على عرض أسعار

Our product categories

مرحل الحالة الصلبة أحادي الطور

مرحل الحالة الصلبة أحادي الطور

View our products
Three phase solid state relay

Three phase solid state relay

View our products

Single state voltage regulator

View our products

منتجاتنا

Click the 3 buttons below to view our Single Phase Solid State Relays, Three Phase Solid State Relays and Solid State Voltage Regulators products respectively.

  لا يمكنك العثور على المنتج الذي تحتاجه؟ انقر على الزر للاتصال بنا!  

اتصل بنا

لماذا تختارنا لنكون المورد الخاص بك؟

المورد الصيني

يقع مصنعنا في مركز الأجهزة الكهربائية ذات الجهد المنخفض في الصين. تقدم منتجاتنا جودة عالية وأسعار تنافسية.

مجموعة واسعة من المنتجات

Lorentzzi can supply a full range of good quality solid state relays, the solid state relays load current is from as small as 10 ampere to maximum 120 amperes.

Fast delivery

We always keep SSRs stock at a reasonable level to meet customers' urgent orders. We believe that helping customers save time also helps them save money.

Solid state relay applications

LED lighting control

Lighting Control

In the lighting control application, the SSR is used as a switch, a stage always needs a silent environment, so the SSR no noise functions just meet this requirement.

Heating elements control

Heating control

The heating elements are always controlled by a  temperature controller, if the temperature controller output is SSR, a SSR will be this execution unit.

Kiln temperature control

Kiln Temperature Control

Kiln systems always need fast and precise temperature control, a solid state relay just has this advantage, so we can often see SSRs in a kiln system.

Automated industry

Automated Industry

In the automation industry, we always use PLC to control various parts, and a SSR is the best execution unit to operate various parts.

Transformer control

Transformer Control

Turning on a transformer control needs a very big current, it is very dangerous. By using a DC AC SSR, we can avoid this danger.

Motor control

Motor Control

We can easily find a SSR in a motor control system, therefore, a suitable SSR is very vital, please اتصل بنا for a perfect instruction.

What is your application scenario?

الأسئلة المتداولة

Want to safely control a heavy load with a small signal? As a professional, your first thought may be to use an electromagnetic relay or an AC contactor. Both products can perfectly solve this problem. But is there a third option? Yes, maybe we can also consider using a solid-state relay. So, what is it? How does it work? Next, we will provide you with a comprehensive explanation.

What is a solid state relay?

A solid-state relay is essentially a switch, but it has no moving parts and no contacts, and uses a semiconductor such as a triac or MOSFET to control the load.

How do SSRs differ from traditional power relays or AC contactors?

AC contactors are actually a traditional power relay, but they can usually handle much higher currents than small traditional electromagnetic intermediate relays. Small power relays can handle currents of no more than 120A, while AC contactors can handle currents of up to 1050A.

Solid-state relays (SSRs) are completely different from traditional relays. You can read our two articles to learn more about the differences between the two products.  First article: SSR مقابل موصل التيار المتردد: أيهما أفضل في نظام التحكم في درجة الحرارة؟  Second article: SSR Vs Relay: Which One Is Better?

The working principle of SSR

Solid State Relay Circuit

A complete SSR contains 3 main parts, they are input circuit, optocoupler, output circuit, its working process is below:

  1. Signal Reception: The SSR receives a control signal at its input terminal.
  2. Optical Coupling: The control signal activates the LED in the optocoupler, which emits light.
  3. Signal Transfer: The light is detected by the photosensitive semiconductor in the optocoupler, transferring the control signal to the output circuit.
  4. Switching Action: The photosensitive semiconductor triggers the semiconductor switching device (e.g., triac or MOSFET), which turns on and allows current to flow to the load.
  5. Load Activation: The load is activated as current flows through it.
  6. Signal Removal: When the control signal is removed, the LED turns off, the photosensitive semiconductor resets, and the semiconductor switching device turns off, stopping current flow to the load. 

لورنتزي® brand solid-state relays use Onsemi brand high-quality optocouplers as isolation elements, and the load circuit part has an RC resistance-capacitance absorption circuit, which can effectively reduce the impact of transient overvoltage and peak current on solid-state relays.

Buy solid state relay

Types of SSRs

In our LorentzziⓇ mindset, solid state relays can be simply divided into three types: single-phase solid state relays, three-phase solid state relaysو منظمات جهد الحالة الصلبة.

We can also classify solid state relays (SSRs) in other ways, and you can learn more about SSR categories in this article: أنواع مرحلات الحالة الصلبة: كيفية اختيار SSR المناسب للتطبيق الخاص بك.

Advantages of using SSRs

As mentioned before, since solid-state relays use semiconductor switch loads, they have 5 advantages: long lifetime, high reliability, low noise, fast switching, high and low voltage isolation, and safer use.

SSR applications

The solid state relay is mainly used to control heating equipment such as food processing machinery, plastic injection molding/extrusion, furnaces, HVAC, infrared heating for residential heating, dryers, thermoforming and welding equipment.

Also we can find it in other devices, such as lighting control, motor control and so on, you can refer to our article for more information: Solid State Relay Applications: A Comprehensive Guide.

How to test a SSR?

Overheating, over-voltage and over-current are the three main reasons that lead to permanent damage to SSRs. So how do we detect whether a solid-state relay is damaged and how to prevent it? You can read our following articles to check and prevent it:

Article 1: How To Test A Solid State Relay?

Article 2: Solid State Relay Problems and Solutions: The Ultimate Guide.

Solid state relays wiring diagram

Wiring a solid state relay is not complicated, but there are some things to note. Our article “How to wire a solid state relay?” provides you with a complete guide to wiring a solid state relay.

هل لا تزال لديك أسئلة؟ يُرجى إخبارنا بها!

عربة التسوق
الصفحة الرئيسية
واتساب
البريد الإلكتروني
بحث
شعار لورينتزي - الصين لوحدة التحكم في درجة الحرارة، SSR، الشركة المصنعة لأداة التشفير الدوارة

تمكين الأتمتة الصناعية！