072894 NHI21-PKZ0 Standard auxiliary contact, 2N/O+1N/C

Key Features

• ✔ Provides 2 normally open + 1 normally closed contacts, and therefore ensures flexible signaling
• ✔ Screw terminal connection, so wiring is secure and straightforward
• ✔ Interlocked opposing contacts, which consequently improve reliability
• ✔ Side mounting design, and thus easy retrofitting on PKZM0 breakers
• ✔ Rated impulse withstand voltage: 6000 V AC, so durability is enhanced
• ✔ Electrical lifespan: 50,000 operations, and therefore long service life
• ✔ Certified to UL, CSA, CE, IEC standards, which guarantees compliance worldwide

Electrical Ratings

• ✔ Rated operational voltage (Ue): up to 500 V AC, 250 V DC
• ✔ Rated operational current (Ie): 3.5 A at AC-15 (220–240 V), 2 A at AC-15 (380–415 V), 1 A at AC-15 (440–500 V)
• ✔ Rated operational current (Ie): 2 A at DC-13 (24 V), 1 A at DC-13 (60 V), 0.5 A at DC-13 (110 V), 0.25 A at DC-13 (220–230 V)
• ✔ Short-circuit protection: 10 A gG/gL fuse, and consequently safe operation
• ✔ Safe isolation: 440 V between auxiliary and main contacts (EN 61140)

Additional Details

• ✔ Overvoltage category III, and therefore suitable for industrial environments
• ✔ Pollution degree 3, so reliable under typical plant conditions
• ✔ Terminal capacity: 0.75–1.5 mm² (solid/flexible with ferrule), AWG 18–14
• ✔ Control circuit reliability: < 1 failure per 100,000,000 operations at 24 V DC
• ✔ Mounting method: side mounting, and consequently quick installation

Typical Applications

• ✔ Auxiliary signaling for motor-protective circuit-breakers
• ✔ Industrial automation panels, and therefore improved monitoring
• ✔ HVAC systems with motor protection, so safety is enhanced
• ✔ Water treatment and filtration plants, and consequently reliable control
• ✔ General electrical installations needing auxiliary contacts