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Auxiliary Contact Block | 2 N/O + 1 N/C | 3.5 A Rated Current | Side Mounting by Eaton
Auxiliary contact block with 2 normally open and 1 normally closed contacts—ideal for motor protective circuit-breaker systems. Built for industrial and commercial applications, it offers a rated operational current of 3.5 A and a durable design for long-lasting performance.
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Product Name/Title: Auxiliary Contact Block | 2 N/O + 1 N/C | 3.5 A Rated Current | Side Mounting by Eaton
Brand: Eaton
SKU: Y7-72894
Alternatively Known As: Auxiliary contact block, NHI auxiliary contact, Motor protective circuit breaker accessory, Eaton NHI contact
Technical Specifications
- Number of contacts: 2 normally open (N/O) + 1 normally closed (N/C)
- Rated operational current (Ie) at AC-15: 3.5 A at 220-240 V, 2 A at 380-415 V
- Rated operational current (Ie) at DC-13: 0.5 A at 110 V, 0.25 A at 220-230 V, 2 A at 24 V, 1 A at 60 V
- Rated operational voltage (Ue): max 500 V AC, 250 V DC
- Terminal capacity: 0.75 - 1.5 mm² solid/flexible with ferrule, 18 - 14 AWG
- Electrical lifespan: 50,000 operations
- Safe isolation: 440 V according to EN 61140
- Short-circuit protection rating: 10 A gG/gL fuse for auxiliary contacts
- Ambient operating temperature range: -25 °C to 55 °C
- Heat dissipation per pole: 0.04 W
- Mounting: side mounting, top mounting model
- Overvoltage category: III
- Pollution degree: 3
- Dimensions (H x L x W): 90mm x 68mm x 15mm
- Weight: 0.038 kg
Key Features
- Interlocked opposing contacts
- Screw connection type
- Side mounting method
- Rated impulse withstand voltage of 6000 V AC
- Overvoltage category III and pollution degree 3
- Safe isolation of 440 V between auxiliary and main contacts
- Rated operational current up to 3.5 A at AC-15
- Electrical lifespan of 50,000 operations
- Control circuit reliability with less than 1 failure in 100 million operations
Professional Installation Requirements
- Professional installation by a qualified electrician is recommended to ensure proper mounting and electrical connection according to local regulations and standards.
Applications
- Retrofit on the right side of motor-protective circuit-breakers
- Used with motor protective circuit-breakers in industrial and commercial electrical control systems
Standards & Compliance
- Complies with AS/NZS 60950 – Safety of IT and Communication Equipment
- Complies with AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
- Durable design reduces need for frequent replacements, minimizing waste
- Complies with electrical safety standards to ensure safe operation and reduce risk of electrical faults
Warranty Information
Warranty details available upon request from Eaton, typically covering manufacturing defects.
Available Now
The Eaton Moeller NHI Standard auxiliary contact is available for immediate purchase, ideal for upgrading or maintaining motor protective circuit-breaker systems in industrial and commercial electrical installations.
