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Chint JSS48A-2Z is an 8-pin power-on delay time relay equipped with two sets of changeover contacts (2Z). It is suitable for timing control in scenarios such as industrial automation and smart homes.
EU. Parâmetros e funções principais
1. Delay Characteristics
– Faixa de atraso: Covers 0.01 seconds to 99 hours and 99 minutos, supporting multi-range adjustment (por exemplo, 0.01s~99.99s, 1min~99h99min). The delay can be quickly set via the panel DIP switches or knobs.
– Precisão: ≤1%, ensuring the reliability of timing control.
2. Especificações Elétricas
– Tensão da fonte de alimentação: Supports AC/DC 24V~48V, AC/DC 100V~240V, AC220V, and AC380V (50Hz), featuring strong wide-voltage compatibility.
– Capacidade de contato: 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. Projeto Estrutural
– Método de instalação: Supports panel mounting and DIN rail mounting (requires CZS08C or CZF11A-E base). It is compatible with standard 35mm DIN rails, economizando espaço.
– Dimensões: 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.
II. Cenários típicos de aplicação
1. Automação Industrial
– Controle Motor: Por exemplo, 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
– Sistema de iluminação: Enables timed switching or scene switching (por exemplo, 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.
III. Usage and Wiring
1. Exemplo de fiação
– 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 (por exemplo, terminais 4, 5) close immediately after power-on and open after the delay ends; contatos normalmente abertos (por exemplo, terminais 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.
4. Performance and Reliability
1. Adaptabilidade Ambiental
– Temperatura operacional: -5℃~+40℃, adequado para a maioria dos ambientes industriais.
– Nível de proteção: IP40 (à prova de poeira), preventing dust from affecting internal circuits.
2. Indicadores de vida útil
– Vida Mecânica: 1×10⁶ operações, resistant to frequent actions.
– Vida Elétrica: 1×10⁵ operações, meeting long-term use requirements.
3. Certificação e Conformidade
– Foi aprovado na certificação CCC e está em conformidade com o GB/T 14048.5 padrão, garantindo segurança e confiabilidade.
V. Recomendações de preço e compra
1. Preço de mercado
– 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 (por exemplo, AC220V, CC24V).
– International Channels: The quoted price from overseas distributors is approximately 52.5~60 USD, and transportation costs need to be considered.
2. Comparação de modelos alternativos
– Omron H3Y-2: Priced at approximately 65 RMB, with a delay range of 0.1s~60s, suitable for short-time control. No entanto, its contact life (400,000 operações) 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.
Vi. Precauções
1. Correspondência de carga
– When driving high-power loads (por exemplo, motores), it is recommended to use an intermediate relay to expand the contact capacity.
2. Ambiente de instalação
– Avoid use in environments with strong magnetic fields or high humidity to prevent interference or corrosion.
3. Alternative Compatibility
– Ao substituir, it is necessary to confirm the pin definition (por exemplo, 8-pin vs. 11-alfinete), as the bases of some models are not universal.
VII. Resumo
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. Ao comprar, it is recommended to obtain technical support and after-sales service through official channels to maximize product performance.
