48 Series

The Max-Air 48 Series Explosion Proof aluminum and stainless steel series limit switch boxes are available for the highest level of safety when installations involve hazardous environments, including very difficult applications such as hydrogen and acetylene. Extremely reliable, robust, and time tested the 48 Series is an excellent solution for your position monitoring needs. Switches available with mechanical, proximity and inductive types, and fully certified to North American and European standards.

Switch Types Available

Code Ref Description
0 MS D3V11 or Cherry D44
S MS Honeywell D7
M PS Magnetic Emme Reed (High Power, 100W Max, 300V, H.S.I.)
A IS IFM NS5002 EExia (7.5-30 DC, NC; Nominal 8.2 DC)
B IS IFM IS5001 DC 3 Wire PNP Switch (10-36V, NO)
D IS IFM IS5026 DC 2 Wire PNP or NPN (5-36V, Programmable)
E IS IFM IS0003 AC/DC 2 Wire Inductive (20-140VAC/10-140VDC, NO)
F IS P&F NJ2-V3-N Namur 2 Wire (8.2V, NC, EExia Rated)
G IS P&F NBB2-V3-E2 DC 3 Wire PNP (10-30V, NO)
H IS P&F NBB3-V3-Z4 DC 2 Wire (5-60V, NO)
K IS P&F NBB2-V3-E3 DC 3 Wire PNP (10-30V, NC)
L IS P&F NBB2-V3-E0 DC 3 Wire NPN (10-30V, NO)
N IS P&F NCB2-V3-N0 Namur (8.2V, NC, EExia Rated)
P IS IFM IS5004 DC 3 Wire NPN (10-36V, NO)

Features and Benefits

Compact Design

Compact construction significantly minimizes valve package envelope size.

Quick Set Cams

The operating position of the switches can be easily changed by manually adjusting the high-resolution spline cams. The cams are spring backed and will not be affected by normal vibration.

Easy Wiring

The 48 Series comes standard with a 10-point terminal strip, which accommodates an external solenoid valve and is fitted with two (2) ½” NPT conduit entries (M20x1.5 upon request). This feature eliminates costly junction boxes and associated labor.

High Visibility Beacon

High visibility indicator offers clear location of the current valve position. Alternative 3-way (L-Port and T-Port) indicators as well as throttle Arrow indicators for butterfly valves applications are also available.

Captive Cover Bolts

Switch boxes come standard with stainless steel captive cover bolts.

Inclusive Mounting Bracket

NAMUR 80mm x 30mm x H30mm stainless steel bracket supplied as standard with stainless steel fastening hardware for ease in mounting the switch box onto an actuator. Available upon request, a universal stainless steel mounting bracket suitable for NAMUR 80mm x 30mm x H20mm and 80mm x 130mm x H50mm.


CSA Approved for Classes 3211 06 and 3211 86 for Industrial Controls Equipment. Testing conducted according to the applicable sections of CAN/CSA C22/2. ANSI/UL 508 and ANSI/UL 50.