المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
شينت JSS48A-2Z is an 8-pin power-on delay time relay equipped with two sets of changeover contacts (2ز). It is suitable for timing control in scenarios such as industrial automation and smart homes.
أنا. Core Parameters and Functions
1. Delay Characteristics
– Delay Range: Covers 0.01 seconds to 99 hours and 99 minutes, supporting multi-range adjustment (على سبيل المثال, 0.01s~99.99s, 1min~99h99min). The delay can be quickly set via the panel DIP switches or knobs.
– Accuracy: ≤1%, ensuring the reliability of timing control.
2. Electrical Specifications
– Power Supply Voltage: Supports AC/DC 24V~48V, AC/DC 100V~240V, تيار متردد 220 فولت, and AC380V (50هرتز), featuring strong wide-voltage compatibility.
– Contact Capacity: AC-15 240V/0.75A (inductive load), DC-13 220V/0.27A, with a rated heating current of 5A. It can directly drive small contactors or solenoid valves.
3. التصميم الهيكلي
– طريقة التثبيت: Supports panel mounting and DIN rail mounting (requires CZS08C or CZF11A-E base). It is compatible with standard 35mm DIN rails, saving space.
– أبعاد: Panel size is 48×48mm, cutout size is 45×45mm, and length is 104mm. It is equipped with a transparent protective cover to prevent accidental contact.
الثاني. سيناريوهات التطبيق النموذجية
1. الأتمتة الصناعية
– التحكم في المحركات: على سبيل المثال, delay control of conveyor belt start and stop to avoid current surges caused by simultaneous startup of multiple motors.
– Equipment Protection: Cooperates with sensors to realize delayed shutdown after fault alarm, reserving maintenance time.
2. Smart Home and Building
– Lighting System: Enables timed switching or scene switching (على سبيل المثال, automatic dimming at night).
– HVAC Control: Timed pre-heating/cooling of air conditioners and water heaters to improve energy efficiency.
3. Experiment and Testing
– Periodic start-stop control of laboratory equipment, or simulation of long-term operation tests.
ثالثا. Usage and Wiring
1. Wiring Example
– Power Input: The AC220V model is directly connected to L/N; the DC24V model requires distinction between positive and negative poles.
– Contact Output: Normally closed contacts (على سبيل المثال, محطات 4, 5) close immediately after power-on and open after the delay ends; اتصالات مفتوحة عادة (على سبيل المثال, محطات 3, 6) close with a delay.
– Reset Function: Forced stop of timing and reset can be achieved by short-circuiting the reset terminal with an external signal.
2. Operation Interface
– Time Setting: Select the time unit (S for second/M for minute/H for hour) and specific value via panel DIP switches or knobs. The nixie tube or indicator light displays the countdown in real time.
– Anti-counterfeiting Verification: The barcode on the side supports mobile phone scanning to verify authenticity, ensuring genuine products.
رابعا. Performance and Reliability
1. القدرة على التكيف البيئي
– درجة حرارة التشغيل: -5℃~+40℃, suitable for most industrial environments.
– مستوى الحماية: IP40 (dust-proof), preventing dust from affecting internal circuits.
2. Service Life Indicators
– الحياة الميكانيكية: 1×10⁶ operations, resistant to frequent actions.
– الحياة الكهربائية: 1×10⁵ operations, meeting long-term use requirements.
3. الشهادة والامتثال
– It has passed the CCC certification and complies with the GB/T 14048.5 معيار, ensuring safety and reliability.
V. توصيات السعر والشراء
1. سعر السوق
– Domestic Channels: The quoted price on platforms such as Taobao and Alibaba is approximately 58~65 RMB (the price may be lower for bulk purchases). Please pay attention to distinguishing voltage specifications (على سبيل المثال, تيار متردد 220 فولت, DC24V).
– International Channels: The quoted price from overseas distributors is approximately 52.5~60 USD, and transportation costs need to be considered.
2. Comparison of Alternative Models
– Omron H3Y-2: Priced at approximately 65 يوان, with a delay range of 0.1s~60s, suitable for short-time control. لكن, its contact life (400,000 العمليات) is lower than that of JSS48A-2Z.
– Chint NTE8 Series: A new product in 2025, supporting more precise short delays of 0.1s~5s, but with relatively single functions. It is recommended to prioritize the versatility of JSS48A-2Z.
السادس. احتياطات
1. Load Matching
– When driving high-power loads (على سبيل المثال, motors), it is recommended to use an intermediate relay to expand the contact capacity.
2. Installation Environment
– Avoid use in environments with strong magnetic fields or high humidity to prevent interference or corrosion.
3. Alternative Compatibility
– When replacing, it is necessary to confirm the pin definition (على سبيل المثال, 8-pin vs. 11-pin), as the bases of some models are not universal.
سابعا. ملخص
With its wide voltage range, high-precision delay, and flexible installation methods, Chint JSS48A-2Z has become a cost-effective choice for industrial and civil timing control. Whether in automated production lines or smart homes, it can provide a stable and reliable time management solution. عند الشراء, it is recommended to obtain technical support and after-sales service through official channels to maximize product performance.
