Littelfuse TSS422 Solid State Time Delay Relay 0.5-60s Adjustable 120VAC Quick Connect Terminals

The TSS422 from Littelfuse is a reliable solid-state timer designed to operate efficiently under harsh conditions with a commendable operating temperature range of -40°F to 167°F. Engineered for precision, it features an adjustable time delay from 0.5 to 60 seconds, allowing for customization based on specific application needs. With quick connect terminals for ease of installation, this timer effectively handles up to 1A steady state and 10A inrush at 60°C, ensuring robust performance even in demanding environments. Protection is a key focus of the TSS422; it boasts a dielectric breakdown rating of 2000V RMS and high insulation resistance, making it suitable for use in high-voltage applications. The device maintains repeat accuracy within ±2% or 20ms, whichever is greater, ensuring that timing operations remain consistent and trustworthy. Humidity tolerance of up to 95% non-condensing further enhances its versatility, making it a smart choice for industrial settings where reliability is paramount.

• Dielectric breakdown rating of ≥2000V RMS for high-voltage protection
• High insulation resistance (≥100 MΩ) enhances electrical safety
• Encapsulated circuitry protects against shock, vibration, and humidity
• Adjustable time delay from 0.5 to 60 seconds for application flexibility
• Repeat accuracy within ±2% or 20ms for precise timing
• Solid-state output with 1A steady state and 10A inrush at 60°C for robust performance
• Quick connect terminals enable easy and fast installation
• Wide operating temperature range from -40° to 75°C for harsh environments
• Low power consumption of ≤2VA for energy efficiency
• Surface mount design with single screw installation for flexible mounting

• Input Voltage: 120VAC
• Output Load Rating: 1A steady state; 10A inrush at 60°C
• Output Form: NO closed during timing
• Output Voltage Drop: ≤2.5V @ 1A
• Open State Leakage Current: ≤5mA @ 230VAC
• Power Consumption: ≤2VA
• Time Delay Range: 0.5 - 60s externally adjustable
• Time Delay Tolerance: ≤±15%
• Initiate Time: ≤20ms
• Repeat Accuracy: ±2% or 20ms whichever is greater
• Reset Time: ≤150ms
• Input Tolerance: ±20%
• Setpoint vs Ambient Temperature and Operating Voltage: ≤±10%
• Operating Temperature: -40° to 75°C (-40° to 167°F)
• Storage Temperature: -40° to 85°C (-40° to 185°F)
• Humidity: 95% relative, non-condensing
• Dimensions: 2.00 x 2.00 x 1.21 in. (50.8 x 50.8 x 30.7 mm)
• Weight: ≤2.4 oz (68 g)
• Termination Type: 0.25 in. (6.35 mm) male quick connect terminals
• Mounting Method: Surface mount with one #10 (M5 x 0.8) screw
• Dielectric Breakdown: ≥2000V RMS terminals to mounting surface
• Insulation Resistance: ≥100 MΩ
• Circuitry: Encapsulated
• Input AC Line Frequency: 50/60Hz
• Output Type: Solid state

Datasheets