Schneider XALK178 Control station

The Schneider Electric XALK178 is a complete emergency stop control station from the Harmony XALK series, built around a 40 mm red mushroom-head pushbutton with twist-to-release reset and 1 NC contact. Housed in a yellow (RAL 1021) polycarbonate enclosure on a light grey (RAL 7035) base, it delivers positive opening operation per IEC 60947-5-1 Annex K for reliable safety circuits.

Technical specifications:

• Commercial reference: XALK178
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Harmony XALK
• Product type: Complete control station
• Function: Emergency stop without latching
• Actuator: 40 mm red mushroom head, 1 NC, unmarked
• Reset method: Twist-to-release
• Contact operation: Slow break, positive opening (IEC 60947-5-1 Annex K)
• Housing material: Polycarbonate
• Rated insulation voltage [Ui]: 600 V (pollution degree 3)
• Rated impulse withstand voltage [Uimp]: 6 kV
• Rated operational current [Ie]: 3 A at 240 V AC-15; 6 A at 120 V AC-15; 0.1 A at 600 V DC-13
• Thermal current [Ith]: 10 A
• Short-circuit protection: 10 A gG fuse
• Contact material: Silver alloy (Ag/Ni)
• Mechanical endurance: 300,000 cycles
• Electrical endurance: 1,000,000 cycles
• Connection: Screw terminals, 0.22-1.5 mm²
• Tightening torque: 0.8-1.2 N.m
• Cable entry: 1 x 0-14 mm; 2 x Pg 13 / ISO M20 (0-12 mm)
• IP rating: IP66 / IP67 / IP69 / IP69K
• NEMA rating: NEMA 4X, NEMA 13
• IK rating: IK03
• Operating temperature: -40...70°C
• Storage temperature: -40...70°C
• Weight: 0.194 kg

Features and benefits:

• Positive opening contacts per IEC 60947-5-1 Annex K ensure the NC contact opens reliably under all fault conditions
• IP66/IP67/IP69/IP69K and NEMA 4X ratings withstand dust, water ingress, and high-pressure washdown up to 7,000,000 Pa at 55°C
• Twist-to-release reset prevents inadvertent machine restart after emergency actuation
• Operating range of -40 to 70°C suits harsh outdoor and industrial environments
• Silver alloy (Ag/Ni) contacts rated to 1,000,000 electrical cycles ensure long service life

Applications:

• Emergency stop stations on machine tools, presses, and industrial automation equipment
• Control panels in food and beverage or pharmaceutical processing requiring high-pressure washdown ratings
• Safety interlock circuits on manufacturing and assembly lines
• Outdoor or corrosive-environment enclosures requiring IP69K and NEMA 4X protection

Compliant with IEC 60947-5-1, IEC 60947-5-5, ISO 13850, IEC 60204-1, IEC 60947-1, UL 508, CSA C22.2 No 14, and JIS C 4520. Part of the Schneider Electric Harmony XALK range.

Also known as: Schneider XALK178, Schneider Electric XALK178, Harmony emergency stop pushbutton station, mushroom head control station.