CHINT NF2 Series - User Manual

092
Fuses, Travel Switches, Universal Change-over Switches, Connection Terminals
Load Switch
P
-
K
NF2 series load switch (hereinafter referred to as switch), mainly
used in electrical circuits with AC 50Hz or 60Hz, rated working
voltage up to 690V, and rated working current up to 125A，
It can be used to isolate faulty equipment or perform power
outage maintenance. It can be used as the main switch of
machine tools, fans, and pumps, and can also be used as the
start-stop switch of small-capacity motors.
Standards compliant：IEC/EN 60947-3,GB/T 14048.3
3.1 Normal use conditions
3.1.1 Ambient air temperature:-5℃ ~+ 40℃ ,and the average
temperature within 24h does not exceed+35℃ .
3.1.2 Altitude: The altitude of the installation site does not
exceed 2000m.
3.1.3 Humidity: When the highest temperature is+40℃ , the
relative humidity of the air does not exceed 50%, and higher
relative humidity is allowed at lower temperatures, for example,
up to 90% at 20℃ .Special measures should be taken for the
occasional condensation due to temperature changes.
3.1.4 Pollution degree:Level 3.
3.2 Installation conditions
3.2.1 Install in a place where there is no significant shaking,
shock and vibration, and no rain or snow;in a medium without
explosion hazard;where there is no place that is sufficient to
corrode metal and damage insulation (including conductive
dust);
3.2.2 Installation category:Class III.
3.3 Transport and storage conditions
3.3.1The following temperature ranges are suitable for
transportation and storage: between-25℃ and+55℃ .Up to
+70℃ in a short time (24h)
Note: When the above-mentioned normal use, installation,
transportation and storage conditions are exceeded, the user
should reach a special agreement with the company.
1.General
2. Type designation
N F 2 -
N F 2 -
Handle color:R,Grey handle with lock;RY,Red and
yellow knob;B,Black straight handle;BR,Black knob
(with lock)
Installation method:DI，Rail installation;H,Single hole
panel installation;HH,Mechanical combination;
DO,Door lock installation (extension rod);
BO,plastic box
series：3，3P
Conventional free air heating current
Design Number
Load Switch
Enterprise feature code
Number of poles:3,3 poles;1,1 pole
Additional pole type:TS,terminal cover
Product shell frame: 40, 40A and below; 80, 80A and
below; 125, 125A and below
Product number
Supporting installation form:Unmarked,DI/DO/BO;R,H
Auxiliary pole：P1，1NO+1NC；P2，2NO
Product number
Additional pole type:PS,Sync disconnected;PD,Pre-
disconnect;PN,N terminal;PE,Ground wire
Product shell frame:40,40A and below;80,80A and
below;125,125A and below
Product number
Note：4-pole products are realized by means of 3 poles + additional poles.
2.2 Additional pole model and its meaning
2.3 Auxiliary pole model and its meaning
2.4 Terminal cover model and its meaning
2.1 Load switch model and its meaning
NF2
Load Switch
N F 2 -
N F 2 -
3. Normal use and installation conditions

CHINT NF2 Series Specifications

General

Product name	NF2 Series MCCB
Poles	2P, 3P, 4P
Rated voltage	230/400V AC
Protection type	Overload protection, Short circuit protection
Mechanical Life	20000 cycles

Summary

NF2 Load Switch Overview

1. General

NF2 series load switch: main use, rated voltage, current, function, standards compliance.

2. Type Designation

NF2 load switch type designation and its meaning breakdown, including model, poles, and accessories.

3. Use and Installation Conditions

Normal operating, installation, transport, and storage conditions for NF2 load switches.

4. Technical Data

Main Technical Parameters

Key electrical and mechanical specifications for NF2 load switch models.

HH Mechanical Assembly Parameters

Technical data for the NF2-HH mechanical combination system.

6. Overall and Mounting Dimensions

NF2 Load Switch Dimensions

Outline and installation dimensions for various NF2 load switch models and mounting types.

7. Order Information and Installation

7.1 Pre-installation Checks

Pre-installation checks including nameplate, appearance, and operating performance verification.

7.2 Installation Methods and Precautions

Instructions and precautions for screw, guide rail, and panel installation methods.

7.2.5 Additional Auxiliary Contact;Fourth Pole Installation

Procedure for installing auxiliary contacts and additional poles on the load switch.

8. Maintenance and Storage

8.1 Daily Maintenance

Measures for removing dust, water vapor, and corrosive substances.

8.2 Maintenance During Operation

Checking wiring terminals, moving parts, and fasteners for reliability.

8.3 Maintenance Cycle

Recommendation for monthly checks and maintenance of the load switch.

8.4 Long-term Use and Storage

Proper procedures for disconnecting, storing, and protecting the product.

9. Warranty and Environmental Protection

9.1 Warranty Period

24-month warranty terms and conditions, excluding user-caused damage.

9.2 Environmental Protection

Guidelines for proper disposal of scrapped products and components.

10. Ordering Instructions

10.1 Ordering Information

Required details for placing an order: model, quantity, delivery time, and consignee.

10.2 Order Example

Examples illustrating how to order products including main body, additional poles, and accessories.

11. Accessories Overview