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HN308 Danaher

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The Danaher HN308 is part of the Timers and Controllers series and features a surface mount design with screws included for installation. It has an overall height of 5.75 inches, a width of 4.125 inches, and a depth of 1.625 inches. This unit uses a terminal block for connections and has a NEMA 1 rating.

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Product Description:

The HN308 belongs to the Timers and Controllers series produced by Danaher. It is a panel-mounted timing device used to establish repeatable on-and-off sequences inside machinery, conveyors, or process equipment. By structuring dwell periods through adjustable contacts, the unit simplifies coordination between sensors and actuators in small-scale automation cells.

The housing is rated NEMA 1, so it is intended for indoor locations where protection from accidental contact and light dust is sufficient. Cabinet depth requirements are minimized by a body that projects just 1.625 in (41.27 mm) behind the mounting surface, while the total front-to-back clearance remains predictable for wiring layouts. The overall height is 5.750 in (146.05 mm), and the overall width is 4.125 in (107.95 mm); these dimensions help users reserve space on crowded backplates without interfering with adjacent relays or drives. Field wiring terminates on a terminal block secured by 8-32 fasteners, providing reliable connections for control-voltage conductors.

The product is supplied with included mounting screws, eliminating the need to obtain separate fasteners for installation. A total of four screws is required to clamp the flange evenly against the mounting surface. The controller is designed for surface mounting, allowing it to be secured directly to a suitable enclosure wall without auxiliary brackets. A circular panel cutout with a diameter of 3.187 in (80.95 mm) centers the bezel, and its round shape simplifies punch selection when multiple units are arranged in the same door. The terminal block faces directly toward the rear, aligning the conductors with standard wireways and helping maintain practical bend radii within the control panel. The shallow body also leaves usable space behind the mounting location for routing wires to nearby control components.

Mounting Hardware
Screws Included
Mounting Screw Count
4
Mounting Screw Size
8-32
Mounting Type
Surface Mount
Nema Rating
1
Overall Depth
1.625 in (41.27 mm)
Overall Height
5.750 in (146.05 mm)
Overall Width
4.125 in (107.95 mm)
Panel Cutout Diameter
3.187 in (80.95 mm)
Panel Cutout Shape
Round
Terminal Type
Terminal Block

Frequently Asked Questions about HN308:

Q: What mounting type does the HN308 timer from Danaher feature?

A: The HN308 uses surface mounting for secure installation on flat surfaces.

Q: How many mounting screws are supplied with the Danaher HN308?

A: A total of four mounting screws are included with the HN308 for installation.

Q: What is the NEMA rating of the Danaher HN308 timer?

A: This model is rated NEMA 1, offering basic protection against dust and limited ingress.

Q: What terminal type does the HN308 support for wiring connections?

A: The terminal connections for the HN308 are made via a terminal block for easy wiring.

Q: What shape and size of panel cutout is necessary for mounting the HN308?

A: The HN308 requires a round panel cutout with a diameter of 3.187 inches.


Internal Product Review

  • ‘‘The HN308 from Danaher is a surface mount timer and controller featuring a NEMA 1 rating and a terminal block connection for straightforward installation. Screws are included, with four 8-32 mounting positions, allowing secure attachment to panels. This unit is well-suited for standard control panel applications, offering convenient integration and dependable operation.’’

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