5DP Series General Purpose DC Contactors

5DP General Purpose DC Contactors are designed for DC adjustable speed drive circuits using silicon controlled rectifier switching and other controls where a combination of normally open and normally closed power contacts are required. In all applications, reduced panel space for dc contactor mounting is made possible through a compact design and the built-in N.C. dynamic brake power contact feature.

In silicon controlled rectifier switching circuits, the SCR is normally phased back prior to contactor opening. Therefore, the N.O. contacts are not required to interrupt any appreciable current. Under abnormal conditions such as failure of the SCR or the control circuit, the DC contactor may be required to interrupt up to 200% current. The N.O. contacts are equipped with permanent magnet blowouts to meet this requirement.

The dynamic brake N.C. contact is required to insert the dynamic brake resistor and therefore must make up to 200% of rated current each time the dc contactor is de-energized. Jogging is accomplished at low voltage and current. Therefore, the dynamic brake contact is rated at 1/3 of rated voltage and dynamic brake current. The permanent magnet blowouts provide this interrupting ability.

5dp definite purpose contactors data sheet

7400 Series Definite Purpose DC Contactors

Key Features of 7400 Series Definite Purpose Contactors:

• Designed for DC motor reversing, starting, and stopping applications.
• Compact size allows for easy installation in a variety of applications.
• Rugged design for harsh environments
• High contact pressure ensures reliable performance and low contact resistance.
• Equipped with silver alloy contacts for high conductivity and long life.
• Available with a range of coil voltages for flexibility in different applications.
• Suitable for high current applications - up to 400A of DC current
• Designed for easy replacement of worn or damaged parts, reducing downtime and maintenance costs.

7400 series dc contactor data sheet

7001 Series General Purpose DC Contactors

The 7001 Series General Purpose DC Contactor offers a 40 amp. rating for adjustable speed drive circuit applications.

Qualifications
CSA & UL Component Rated

Features

• Silicon Controlled Rectifier switching
• Combination of Normally Open and Normally Closed power contacts
• Permanent Magnetic Blowouts
• Reduced Panel Space made possible by compact design
• Built- in N.C. dynamic brake power contact
• Stainless Steel Springs
• Molded Housing
• Molded Coil
• Free- Floating Armature- Magnet Frame
• Auxiliary Contacts
• Pressure Type Terminals

MIL DUTY LIMIT SWITCH

Type 102HL and HLD Hatchway Limit Switches are designed as pilot circuit devices for all heavy duty applications to limit travel or set up function at predetermined positions. OnType HL single acting switches, the lever operates in one direction only; while on Type HLD double acting switches, it operates in two directions with a variety of contact sequences.

Features:

• Double Break removable Silver-to-Silver Contacts.
• Each contact may be independently changed from normally open to normally
• closed and vice versa without disassembly.
• Operating Arm on most models may be field changed to the other side by
• reversing the shaft.
• Oil impregnated bearings at contact finger pivot points.
• Oil impregnated shaft bearings need no lubrications.

Mill Duty Limit Switch JC