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ZS-300 NEMA 4X Housing

For AM, GM, AF, NF, LF Series Actuators

Application

The ZS-300 (-1) NEMA 4X enclosures may be used with GM, AM, AF, NF and LF

Belimo actuators. They are intended for use primarily to provide protection

against corrosion, windblown dust and rain, splashing water, hose-directed

water; undamaged by the formation of ice on the enclosure. Type 304 stainless

steel enclosures resist moisture, dust, salt, and corrosive chemicals, and are

easy to keep clean for sanitary applications.

Operation

The ZS-300 enclosures are designed so that the required actuator may be easily

mounted in the enclosure. The operating shaft and coupling are inserted from

the backside through the rotating shaft seal. The actuator is fastened on the end

of the operating shaft and secured at the end with an anti-rotation strap.

Adjustable mounting brackets, if supplied, are assembled to the fixed mounting

holes at the top and bottom of the enclosure with stainless steel nuts, bolts and

lock washers. The direct drive coupling is designed for a 1/2” round or

hexagonal shaft and secured with two square head set screws. Mounting

brackets are adjusted and secured in place.

Ordering Information

ZS-300 Housing with mounting brackets

ZS-300-1 Housing without mounting brackets

ZS-300-5 316L enclosures, custom mounting brackets and operating

shaft/couplings are available. Consult Belimo.

Accessories

ZS-300-BK Mounting bracket set

ZS-300-C1 1/2” shaft adaptor (standard with housing)

ZS-300-C2 3/4” shaft adaptor

ZS-300-C3 1” shaft adaptor

Dimensions (Inches [mm])

ZS-300

ZS-300 Protective Housing

NEMA 4X, stainless steel, corrosion resistant enclosures for AM, GM, AF, and NF actuators

Technical Data ZS-300 (-1) (-5)

Material All 304 stainless steel housing, door, (with

neoprene gasket), shaft, coupling, universal

mounting plate, and hardware.

Material Thickness 16 GA

Conduit holes Field drilled as required. U.L. listed electrical

fittings for NEMA 4X conditions must be used.

Operating shaft

(Ordered separately)

1/2” by 5 15/16” long 304 stainless steel with

integral coupling for direct mounting to 1/2”

round or hexagonal drive shafts. Square head

set screws are 304 stainless steel.

Optional shafts ZS-300-C1 1/2” shaft adaptor (standard with housing)

ZS-300-C2 3/4” shaft adaptor

ZS-300-C3 1” shaft adaptor

Rotating shaft seal Machined PVC hub, bronze oilite bearings, 10

PSI, Nitrile, bi-rotational, hydrodynamic, radial

lip Wave seal.

Industry standards The Belimo ZS-300 NEMA 4X enclosure and

Belimo model GM, AM, AF, NF and LF are U.L.

listed. These enclosures conform to the NEMA

standard for Type 4X (water-, dust-tight and

corrosion resistant).

Weight 11 lbs. [5 kg]

without actuator or mounting brackets.