Mercmaster Jr.™ Dimensions: 35, 50, 70, 100 and 150 Watt,
INSTRUCTION SHEET
654031-001
Mercmaster Jr.™Enclosed and
Gasketed HPS Lighting Fixtures.
High Pressure Sodium. Suitable for Use in Wet Locations.
Unilets®for use with Threaded Metal Conduit.
120V Integral Ballast. Medium Base Socket for Medium Base Lamps.
Applications
•
Inexpensive HID integrally ballasted
fixture for use in hazardous locations –
inexpensive to buy and inexpensive to
operate (uses one-fifth as much electrical
energy as incandescent and three quarters
as much as fluorescent).
•
Enclosed and gasketed HID lighting
fixtures for use in tunnels, walkways,
bridges, storage facilities, processing plants,
parking lots, foundries, manufacturing plants,
power plants and other locations where
moisture, dirt, dust or corrosive atmospheres are encountered.
Features
•
“Wireless” design. Threading of fixture
unit onto mounting hood makes electrical
connection. Only wiring required is attaching
two wires to connection block in mounting
hood.
•
Safe, easy servicing without disconnecting
any wiring. “Wireless” fixture unit easily
threads off mounting hood for convenient
servicing.
•
Quick, easy conversion from Appleton V-51
incandescent installation to Mercmaster Jr.
HID. Just remove V-51 fixture unit and
thread Mercmaster Jr. fixture unit onto
existing V-51 mounting hood.
Standard Materials
•
Mounting Hoods: copper-free aluminum
(4/10 of 1% max. copper content) or
malleable iron.
•
Ballast bodies: copper-free aluminum
(4/10 of 1% max. copper content).
•
Reflectors: fiberglass-reinforced polyester or porcelain.
•
Globe: 35W-100W, threaded prismatic
glass and threaded polycarbonate: 150W
threaded heat-resistant prismatic glass.
•
Refractor: heat-resistant prismatic glass.
Standard Finishes
•
Ballast bodies, aluminum guard and VMA,
VXHA-A, OBVW1-A, OBV1-A. JBW1-A,
JB1-A, GSW2, and MS mounting hoods:
epoxy power coat finish. Two coat baked finish, electrostatically applied for complete,
uniform surface protection.
•
VA, VXHA, OBVW1, OBV1, GS-2, JBW1,
AND JB1 malleable iron mounting hoods:
triple coat – (1) zinc electroplate; (2) dichromate; and (3) aluminum polymer enamel.
•
Steel guard: zinc electroplate
Options
•
Fuses for fixtures. Factory installed.
Compliances
•
UL Standard 1572, 844 and 1598A.
•
Suitable for use in wet locations.
•
NEMA 4X.
Class I Div. 2 Groups A, B, C, and D
Temperature identification numbers of Mercmaster Jr.
Fixtures
With Globe or with With 8"
Globe & Reflector Refractor
UL/NEC Temp. UL/NEC Temp.
Ident. No. Ident No.
Lamp Nameplate Temperature Nameplate Temperature
Watt Marking Range Marking Range
035 T3C 136-160
0
C T3C 136-1600C
050 T2D 201-2150C T2D 201-2150C
070 T2B 231-260
0
C T2B 231-2600C
100 T2A 261-2800C T2A 261-2800C
150 T2 281-3000CT2 281-3000C
Class II Div.1 & 2 Groups E, F and G
Temperature Identification Numbers
With Globe, with Globe & Reflector
or With 8" Refractor
UL/NEC Temp.
Ident. No.
Lamp Nameplate Temperature
Watts Marking Range Groups
035 T4A 101-120
0
C E, F, G
050 T3C 136-1600C E, F, G
070 T3A 166-1800C E, F
100 – –
150 – – –
1Mounting holes 9/32" diameter on 5-1/8'' centers
2Mounting Plate is a separate piece furnished with Outlet Box Mount fixture. The 2.75" dimension is for
mounting on 3-1/4" octagonal boxes and the 3.50" dimension is for 4" octagonal boxes.
3Wall Mount fixtures provide the following wall clearances: with GSU box—2" from wall with globe and
1-5/16" from wall with refractor; with JBX box—1-5/8" from wall with globe and 15/16" from wall with refractor. Reflectors cannot be used with Wall Mount fixtures.
4Order GSU or JBX Box separately.
5Standard dome or 30" angle reflectors can be used with Stanchion Mount.
7.00"
17.8 cm
10.00"
25.4 cm
9.61"
25.3 cm