STBDDI3725KS Basic Input Module | 16 I/O STB Kit by Modicon

STBDDI3725KS – Basic Digital Input Kit

Brand: Modicon | Series: STB Distributed I/O | Type: Basic Digital Input Kit

This 16-channel 24 V DC digital input kit delivers reliable signal acquisition for industrial automation. It combines a screw-type connector, input module, and base in one compact unit. The design supports hot swapping and protects against reverse polarity, overvoltage, and short circuits. It is ideal for PLC systems, control panels, and factory floor equipment.

Key Features

• 16 digital inputs – 24 V DC, positive logic
• Fast response – 2 ms off-to-on / on-to-off
• Wide temperature range – -25…70 °C operation
• Hot & cold swapping – minimizes downtime
• Integrated protection – fuse, resistor-limited, reverse polarity
• High isolation – 1500 V between channels and logic bus

Technical Specifications

• Input voltage limits – 11…30 V (state 1) / -3…5 V (state 0)
• Input current – 4.5 mA typical
• Current thresholds – ≤1.5 mA (state 0) / ≥2.5 mA (state 1)
• Response time – 2 ms (both on-to-off and off-to-on)
• Protection – 5 A time-lag fuse, resistor-limited input, reverse polarity
• Insulation – 1500 V for 1 minute (channel to logic bus)
• Power supply – 24 V DC via power distribution module
• Current consumption – 100 mA at 5 V DC (logic bus)
• Operating temperature – -25…70 °C (no derating)
• Storage temperature – -40…85 °C (no derating)
• Humidity – 95 % at 60 °C (non-condensing)
• Vibration resistance – 3 gn at 58…150 Hz (DIN rail 35×7.5 mm)
• Shock resistance – 30 gn for 11 ms
• IP rating – IP20 (EN 61131-2 class 1)
• Altitude – ≤2000 m
• Overvoltage category – II
• Dimensions – 125 x 18.4 x 65.1 mm (W x H x D)
• Weight – 0.086 kg

Installation & Compatibility

• Mounting – Snap onto 35 mm DIN rail (symmetrical)
• Base – STBXBA3000 (included)
• Connector – STBXTS1180, 18-terminal screw type
• Compatible PDM – STBPDT3100 / 3105
• Hot swapping – Supported with basic NIMs
• Cold swapping – Yes

Certifications & Standards

• Standards – EN/IEC 61131-2 type 3
• Certifications – UL, CSA, FM Class 1 Division 2
• Pollution degree – 2 (IEC 60664-1)
• Marking – CE

Manager’s Insight

“The STBDDI3725KS balances performance and protection. Its wide temperature range and hot-swap capability make it a robust choice for demanding production lines. The integrated fuse and reverse polarity protection reduce field failures, saving maintenance costs.”

Expert Review

“This kit simplifies installation with pre-assembled components. The response time is consistent, and the insulation level ensures signal integrity in noisy environments. A reliable workhorse for digital input applications.”

Applications

• PLC and PAC systems
• Industrial control panels
• Conveyor and material handling
• Packaging machinery
• Building automation
• Process monitoring

FAQ

• Can I use this with a 12 V DC system?
  No, the module requires 24 V DC nominal. Operating limits are 11…30 V at state 1.
• Is the fuse replaceable?
  Yes, the integrated fuse is a standard 5 A time-lag type. Refer to the manual for replacement.
• Does it support sinking or sourcing inputs?
  It uses positive logic (sourcing) – common for Modicon systems.
• What is the maximum cable length?
  Keep input cables under 30 m to avoid voltage drops and noise.
• Can I hot-swap the module while powered?
  Yes, hot swapping is supported when used with basic NIMs.
• Are there any software drivers needed?
  No additional drivers; it works with standard STB configuration tools.

Buying Guide

• Quantity – For large panels, order in multiples of 4 for easy distribution.
• Spare parts – Keep an extra STBXTS1180 connector for quick field changes.
• Environment – Verify ambient temperature; derating may apply above 70 °C.
• Power supply – Use a regulated 24 V DC PDM for stable operation.
• Compatibility – Confirm base and PDM models from the list above.

Package Contents

• 1 x STBDDI3725 module
• 1 x STBXTS1180 screw-type connector (18 terminals)
• 1 x STBXBA3000 base
• Documentation and mounting instructions

Warranty & Shipping

• Warranty – 12 months against manufacturing defects
• Shipping – Orders dispatched within 12-24 hours
• Carriers – FedEx, UPS, DHL (tracking provided)

For inquiries: sales@powergearx.com | +86 18030005825 (WhatsApp)

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