Keithley 3740 General Purpose Switch Card
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Keithley 3740 is a 32-channel switch card with 28 Form C relays and 4 Form A relays for signal routing and power switching up to 7A.
Product details
| Model | 3740 |
| Manufacturer | Keithley |
| Category | DAQ Modules & Cards |
| Availability | Made to order |
Description
Overview
The Keithley 3740 is a 32-channel general purpose switch card for the 3700A mainframe series. It provides 28 Form C relay channels for routing signals or power, plus 4 Form A relay channels for high-current applications up to 7A. The card features latching electromechanical relays, onboard temperature monitoring, and flexible connection options.
Key Features
- 28 general purpose Form C relays rated for 300V, 2A switched or 3A carry capacity; 60Ω, 125VA
- 4 high-current Form A relays rated for 250VAC/30VDC, 7A switched capacity; 210Ω
- Latching electromechanical relays for reliable switching
- Onboard temperature sensor with 70°C threshold notification to mainframe
- 50-pin male D-sub connectors for signal connections
- Screw terminal connections available via optional 3740-ST accessory
- Relay closure memory storage for programmable configurations
- Analog backplane connection relays for user interconnections
Applications
- Signal routing and multiplexing in automated test equipment
- Power switching and load control in industrial systems
- Multi-channel data acquisition and measurement systems
- High-current switching applications in laboratory and production testing
Specifications
| Series | 3700 Series |
| Maximum Current | 7 A |
| Maximum Power | 60 W |
| Maximum Voltage | 300 V |
| Number of Channels | 32 Channels |
| Operating Temperature Range | 0-50°C |
| Relative Humidity Range | 0-70% |
| Series Compatibility | 3700A Series |
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Keithley 3740 General Purpose Switch Card
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