Merlin MT600 Spécifications télécharger pdf (Page 29)

COMPACT

NS circuit breaker

Rotary operating handles

Operation

■ The direct rotary handle maintains:

❑ Suitability for isolation;

❑ Indication of three positions O (off), I (on) and tripped;

❑ Access to the "push-to-trip" button;

❑ Visibility of and access to trip unit settings;

COMPACT

NS250N circuit breaker

with direct rotary handle.

COMPACT

NSF250N circuit breaker with extended rotary

handle.

Door mounted

Makes it possible to operate circuit breakers installed inside an enclosure from the front.

The handle mechanism can be used in NEMA 3R and 12 enclosure applications.

Degree of protection: IP40 as per IEC 529.

Operation

■ The unit maintains:

❑ Suitability for isolation;

❑ Indication of the three positions O (off), I (on) and tripped;

❑ Visibility of and access to trip unit settings when the door is open;

■ Door opening prevented when circuit breaker is on;

■ The circuit breaker may be locked in the off position by using one to three

padlocks, padlock shackle diameter 0.19 to 0.31 inch (5 to 8 mm) (padlocks are not

supplied). Locking prevents opening of the switchboard door.

Models

■ Standard with black handle;

■ VDE type with red handle and yellow bezel for machine tool control.

Installation

The extended rotary operating handle is made up of:

■ A unit that replaces the front accessory cover of the circuit breaker (secured by

screws);

■ An assembly (handle and front plate) on the door that is always secured in the

same position, whether the circuit breaker is installed vertically or horizontally;

■ An extension shaft that must be adjusted. The distances between back of circuit

breaker and door are:

❑ COMPACT

NSF150/250 circuit breakers: 7.4 to 24 inches (185 to 600 mm),

❑ COMPACT

NSJ400/600 circuit breakers: 8.4 to 25 inches (210 to 625 mm).

Variation for COMPACT

NSF150 to NSJ600 circuit breakers

For withdrawable configurations, the extended rotary handle is also available with a

telescopic shaft with two stable positions.

The extended rotary operating handle is Listed under UL file E103955 and Certified

under CSA file LR 69561.

86037

86039

E36970

Directly mounted

Installation

Replaces the circuit breaker front accessory cover (secured by screws).

Models

■ Standard with black handle;

■ VDE type with red handle and yellow bezel for machine tool control.

Variations for COMPACT

NSF150 to NSJ600 circuit breakers

Accessories transform the standard direct rotary handle for the following situations:

■ Motor control centers (MCCs):

❑ Door opening prevented when circuit breaker is on;

❑ Circuit breaker closing inhibited when door is open;

■ Machine tool control, complies with CNOMO E03.81.501N, degree of protection IP54.

The directly-mounted rotary operating handle is Listed under UL file E103955 and

Certified under CSA file LR 69561.

■ The circuit breaker may be locked in the off position by using one to three

padlocks, padlock shackle diameter 0.19 to 0.31 inch (5 to 8 mm) (padlocks are not

supplied).

COMPACT

NS circuit breaker: functions and characteristics

Accessories

tripped

reset

OFF

Tripped

I/ON

(Closed)

O/OFF

(Open

isolated)

Closing

Reset

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Merlin MT600 Spécifications Page 29

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