Overview
The Square D 9001KA-1 is a standard contact block for the Schneider Electric Harmony 9001K 30mm push-button operator range. This contact block delivers reliable performance in heavy-duty industrial control applications, featuring a 1 NO + 1 NC (1 normally open, 1 normally closed) contact configuration rated for 10A at 600VAC/VDC. The screw-clamp terminal design allows fast, tool-free wiring directly into control circuits.
Key Features
- 1 Normally Open + 1 Normally Closed contact configuration
- Rated 10A at 600VAC, 2.5A at 600VDC
- Screw-clamp terminals (wire range: 0.22–2.5 mm²)
- Silver alloy contacts for long contact life
- FINGERSAFE™ design with IP20 protection against accidental live contact
- Clear nylon cover allows visual identification from distance
- Momentary action, standard operator with protected terminals
- Threaded mounting for quick installation and replacement
Technical Specifications
- Part Number: 9001KA-1 / 9001KA1
- Manufacturer: Schneider Electric / Square D
- Series: Harmony 9001K
- Contact Configuration: 1 NO + 1 NC (Change-Over)
- Contact Rating: 10A at 600VAC / 2.5A at 600VDC
- Operating Voltage: 120/240/480/600 VAC, 125/250/600 VDC
- Enclosure Rating: IP20 (Finger Safe)
- Terminal Type: Screw Clamp (IEC 60947-1)
- Wire Gauge: 0.22–2.5 mm²
- Contact Material: Silver Alloy
- Tightening Torque: 0.8 N·m
- Operating Temperature: −25°C to +70°C
- Size: 30 mm (standard push-button opening)
- Material: Nylon body with clear color cover
- Net Weight: 0.027 kg
- Standards: UL 508, EN/IEC 60947-5-1, CSA C22.2 No. 14, RoHS Compliant
Typical Applications
- Programmable logic controller (PLC) I/O interface circuits
- Emergency stop circuits and safety interlocks
- Motor start/stop control networks
- Selector switch circuits requiring both latching and momentary action
- Machine automation and process control systems
- Heavy-duty industrial push-button assemblies in harsh environments
- OSHA-compliant control panels and E-stop systems
Compatibility & Replacements
Compatible With
- Harmony 9001K 30mm push-button operators (all variants)
- Harmony 9001K selector switches and pilot light assemblies
- Harmony 9001SK operators (plastic bezel variant)
- Harmony 9001KX operators (square metal bezel variant)
- Standard industrial control circuits and PLC input modules
- Any 30mm mounting cavity or octagonal ring-nut push-button base
Replaces / Drop-In Replacement For
- Direct replacement for damaged or worn Harmony 9001K contact blocks in existing assemblies
- Upgrade path for legacy 9001K push-button installations requiring reconfiguration
- Verify compatibility with your system integrator before ordering to ensure correct contact function and voltage rating for your application.
Works With
- Schneider Electric SoMachine, EcoStruxure Control Expert (formerly Unity Pro / TIA Portal)
- Rockwell CompactLogix and ControlLogix PLC input modules via standard industrial relays
- Siemens S7-1200/1500 safety circuits (via appropriate interface cards)
- Standard industrial 24VDC control power supplies and relay logic
- Hardwired control circuits and legacy machine controllers
- No special software driver required; operates as passive electromechanical component
