Schneider Harmony XB5AA21 Pushbutton Switch

Technical Overview

22mm plastic pushbutton with spring-return black flush operator, 1 NO contact, 10M mechanical cycles, and IP66/IP67/IP69K high-pressure washdown protection.

Key Features

Robust plastic bezel and standard head type with 22mm mounting diameter
Equipped with 1 Normally Open (NO) slow-break contact with silver alloy (Ag/Ni) contacts
High environmental protection with IP66, IP67, IP69, and IP69K ratings
NEMA 4X and NEMA 13 rated for indoor/outdoor protection against dust and liquid ingress
Extreme washdown resistance up to 7,000,000 Pa (1,015 psi) at 55 °C from 0.1 m distance
Exceptional mechanical durability rated for up to 10,000,000 cycles
Broad operating temperature range from -40 °C to 70 °C

Technical Specification Matrix

Parameter	Value
Range of Product	Harmony XB5
Bezel Material	Plastic (Dark grey)
Mounting Diameter	22.5 mm
Operator Profile	Black flush, unmarked
Contacts Configuration	1 NO
Contact Operation	Slow-break
IP Degree of Protection	IP66, IP67, IP69, IP69K (IEC 60529)
NEMA Protection Rating	NEMA 4X, NEMA 13
IK Protection Rating	IK03 (IEC 50102)
Mechanical Durability	10,000,000 cycles
Tightening Torque	0.8 to 1.2 N.m conforming to IEC 60947-1
Rated Insulation Voltage (Ui)	600 V (pollution degree 3) conforming to IEC 60947-1
Conventional Free Air Thermal Current (Ith)	10 A conforming to IEC 60947-5-1
Short-Circuit Protection	10 A cartridge fuse type gG conforming to IEC 60947-5-1
Operating Force	3.8 N (NO changing electrical state)
Operating Temperature	-40 to 70 °C
Physical Weight (kg)	0.04
Dimensions L x W x H (cm)	5.2 x 3 x 4.2

Industrial Applications

1. Food and Beverage Processing Washdown Interface

In food processing facilities, control panels are subject to high-temperature, high-pressure chemical washdowns. Using this pushbutton, engineers can design start/stop controls for conveyors or mixers that sit right in washdown zones.

Problem Solved

Standard pushbuttons fail when exposed to water ingress and high pressure. This unit solves this issue through its IP69K rating and resistance to high-pressure cleaning (7,000,000 Pa at 55 °C, at a distance of 0.1 m), ensuring moisture does not compromise the internal contact.

IP69Khigh-pressure washdownfood grade environment1 NO contact22mm panel mount

2. Outdoor Crane and Hoist Control Panels

Crane and hoist operator pulpits or outdoor pendant control stations are constantly exposed to dust, UV light, rain, and freezing temperatures.

Problem Solved

Rapid degradation of metal housings or frozen contact mechanisms under sub-zero weather is averted. It operates down to -40 °C and holds NEMA 4X/13 protection to keep out ice, water, and grit while its 10-million mechanical cycle life ensures reliable operation.

NEMA 4XNEMA 13ambient operating temperature -40°Cspring return mechanismplastic bezel

3. Corrosive Chemical Conveyor Control Line

Chemical mixing and packaging lines require localized pushbuttons to trigger batch feeders. These environments often contain corrosive airborne particles and damp conditions.

Problem Solved

Metal pushbuttons quickly rust and cause electrical failures in acidic or humid areas. The double insulated plastic construction and silver alloy contacts resist chemical wear, while the 10A cartridge fuse protection secures the contact circuit against short-circuits.

corrosion resistanceplastic bodysilver alloy contacts600V insulation voltageslow-break contact