STBDDI3725KS – Basic Digital Input Kit, 16 Channels, 24 V DC
Modicon STB distributed I/O solution. This kit delivers 16 discrete DC inputs for industrial control systems. Engineered for reliability in harsh environments. Supports cold and hot swapping for minimal downtime. Compact design fits standard DIN rails.
Technical Specifications
| Brand | Schneider Electric |
| Model | STBDDI3725KS |
| Series | Modicon STB (Basic Digital Input) |
| Input Channels | 16 discrete inputs, 24 V DC |
| Input Voltage Range | State 1: 11…30 V, State 0: -3…5 V |
| Input Current | 4.5 mA typical, ≥2.5 mA (state 1), ≤1.5 mA (state 0) |
| Response Time | 2 ms (off-to-on), 2 ms (on-to-off) |
| Protection | Integrated 5A fuse, input resistor-limited, reverse polarity |
| Insulation | 1500 V (channel to logic bus) for 1 min |
| Ambient Temp (Operation) | -25…70 °C (no derating) |
| Storage Temp | -40…85 °C |
| Relative Humidity | 95% at 60 °C (non-condensing) |
| Vibration Resistance | 3 gn (58…150 Hz) on 35×7.5 mm DIN rail |
| Shock Resistance | 30 gn / 11 ms (IEC 88-2-27) |
| IP Rating | IP20 (EN 61131-2 class 1) |
| Overvoltage Category | II |
| Power Consumption | 100 mA at 5 V DC (logic bus) |
| Dimensions (WxHxD) | 125 x 18.4 x 65.1 mm |
| Weight | 0.086 kg |
Key Features & Benefits
- Positive logic digital inputs for standard PLC compatibility.
- Hot swapping supported for basic NIMs – no system shutdown.
- Integrated protection fuse, resistor-limited, and reverse polarity.
- Wide temperature range -25…70 °C suitable for rugged sites.
- High noise immunity with 1500 V isolation from logic bus.
- Compatible with STBXTS1180 screw connector and STBXBA3000 base.
- LED indicators: RDY (module) and IN1..IN16 (channel status).
Installation & Compatibility
- Mount on 35 mm DIN rail (symmetrical 7.5 or 15 mm).
- Requires STBPDT3100/3105 power distribution module.
- Hot swapping compatible with basic NIMs.
- Designed for Modicon STB distributed I/O island.
- Works with Modicon Quantum and other PLC systems via bus.
Diagnostic & Status
- Green RDY LED: module power/health status.
- 16 green IN LEDs: per-channel input state indication.
- Fast fault detection with 2 ms response time.
- Supports cold swapping for maintenance without power off.
Certifications & Standards
- UL, CSA, FM Class 1 Division 2 certified.
- Complies with EN/IEC 61131-2 type 3.
- Pollution degree 2 (IEC 60664-1).
- CE marked for European market.
Package Contents
- STBDDI3725 digital input module
- STBXTS1180 18-terminal screw connector
- STBXBA3000 I/O base
Typical Applications
- Factory automation – conveyor monitoring, sensor arrays.
- Process control – valve position feedback, limit switches.
- Packaging machinery – photoelectric sensors, proximity detectors.
- Material handling – emergency stop, interlock circuits.
FAQ – Quick Answers
- Q: Can I replace this module while power is on?
A: Yes, hot swapping is supported for basic NIMs. - Q: What is the maximum input voltage?
A: Permissible voltage is 30 V DC. - Q: Does it work with 12 V sensors?
A: No, rated supply is 24 V DC; state 1 range 11..30 V. - Q: How to reset the internal fuse?
A: Fuse is integrated on PDM; replace the PDM fuse (5A time lag). - Q: Is this kit compatible with Quantum series?
A: Yes, via Modicon STB bus and Modicon Quantum adapters.
Shipping & Warranty
- Shipping: FedEx, UPS, DHL – global express delivery.
- Warranty: 12 months against manufacturing defects.
- Each unit is tested before shipment.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipment support – fast and reliable logistics.
- Offering tested industrial surplus / refurbished options.
- 12-month warranty with technical verification before shipping.
- Expert support for obsolete control systems.
- Technical verification performed on every order.
Contact Information
Inquiries: info@oiltechcontrols.com
Phone / WhatsApp: +86 158 8020 0923
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Original Source: https://www.oiltechcontrols.com/
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