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Pressure and Differential
Pressure Switches, Explosion-Proof
Enclosure, Type 700, B-Series
This broad Ashcroft® switch series
is ideal for use in virtually all process and industrial applications.
• Explosion-proof NEMA 7/9, IP66
enclosure (explosion-proof enclosure Class I, Div. 1 & 2, Groups
B, C, & D and Class II, Div. 1 & 2,
Groups E, F & G)
• Choice of switch elements for all
applications, including hermeti-
cally sealed
• Wide choice of wetted materials,
including all-welded Monel or
stainless steel
• Fixed or limited adjustable
deadband
• UL listed
• Various actuators available
• Belleville actuator
1 - ENCLOSURE
B7 - Pressure switch, type 700, explosion-proof
enclosure meets Div.1 & 2, NEMA 7/9, IP66
requirements
D7 - Differential pressure switch, type 700,
explosion-proof enclosure meets Div. 1 & 2,
NEMA 7/9, IP66 requirements
2 - SWITCH ELEMENTS
Order Description/Maximum Electrical Ratings
Code UL/CSA Listed SPDT
(4)
20
21
Hermetically sealed
22
deadband
23 Heavy duty ac 20A,125/250 Vac
15A,125/250/480 Vac
24
1/4A, 250 Vdc
25 Heavy duty dc 10A,125/ Vac or dc
1/8HP 125/ Vac or dc
26
proof
27 High temp. 300°F 15A, 125/250 Vac
31 Low level (gold) 1A,125/250 Vac
contacts
Hermetically sealed
32 switch, general 11A, 125/250 Vac
purpose 5A, 30 Vdc
50 Variable deadband 15A,125/250 Vac
UL/CSA Listed Dual SPDT
61
62
ment proof
63 Dual high temp. 300°F 15A, 125/250 Vac
15A,125/250/480 Vac
64 Dual general purpose 1/2A, 125 Vdc
1/4A, 250 Vdc
65 Dual ammonia service 5A,125/250/480 Vac
Hermetically sealed
67
deadband
Dual hermetically
68 sealed switch, 11A,125/250 Vac
general purpose 5A, 30 Vdc
Narrow deadband 15A, 125/250 Vac
(9)
Ammonia service 5A, 125/250 Vac
(3)
switch, narrow 5A, 125/250 Vac
(1)
General purpose 1/2A, 125 Vdc
(4)
Sealed environment 15A, 125/250 Vac
(4)
Dual narrow deadband 15A, 125/250 Vac
(4)
Dual narrow environ- 15A, 125/250 Vac
(3)
switch, narrow 5A, 125/250 Vac
(8)
(2)
• Readily available
• Standard pressure connection
materials:
Pressure psi ranges
- 316L SS
Differential psid ranges
- Nickel plated brass
(9)
Pressure and differential inches
of water ranges
- Epoxy coated carbon steel
• ATEX models available
• IECEx models available
• CSA models available
• FM models available
(8)
(10)
(8)
(8)
• Setpoints adjustable from 15-100%
of range
• Dual Seal Rating models available
3 - ACTUATOR SEAL
Code Process
& Temp.
Material Limits in.H2O psi psi 3000
°F psi
B-Buna N 0 to 150
V-Viton 20 to 300
T-Teflon 0 to 150
(5)(10)
S-SS
P-Monel
0 to 300
(5)
0 to 300
4 - OPTIONS
(See pages 238-239)
5 - STANDARD PRESSURE RANGES
(See page 235)
NOTES:
1. Standard switch.
2. Dual switches are 2 SPDT snap-action switches not
independently adjustable.
3. Estimated dc rating, 2.5A, 28 Vdc (not UL listed).
4. Estimated dc rating, .4A, 120 Vdc (not UL listed).
5. Available on pressure only.
6. Ambient operating temperature limits –20 to 150°F,
all styles. Setpoint shift of ±1% of range per 50°F
is normal. Switch calibrated at 70°F reference.
7. Items are wetted by process fluid.
8. Refer to Option Table.
9. Order Option XUD, stainless steel process connection.
10. On differential switches, stainless steel is
available in 15, 30, 60 and 90 psid ranges only.
Includes Teflon O-ring and 316 SS connection.
TO ORDER THIS B-SERIES PRESSURE SWITCH:
(7)
(6)
Range
Vac 0-600 1000 2000-
(8)
ATEX APPROVAL FOR HAZARDOUS LOCATIONS
ATEX is a European designation that deals with standards for
equipment and protective systems intended for use in potentially explosive atmospheres. This approval is required for
switches intended for use in hazardous locations, especially
important to OEMs who export to Europe and contractors
specifying or purchasing products for European applications.
XCN option adds special features to Ashcroft 700-Series
switch enclosures that meet the requirements for the highest
levels of security and danger, such as:
• Special locking device requiring an Allen wrench to remove
cover
• Special vents that blow out should the diaphragm rupture,
thus preventing pressure build-up in the enclosure
• Special conduit plug requiring an Allen wrench for removal
• Available on pressure, temperature and differential
pressure models
• Meets Explosion Class EEx d IIC T6
LOOK FOR THIS AGENCY
MARK ON OUR PRODUCTS
Select: B7 20 B X06 600#
1. Enclosure:
2. Switch Element:
3. Actuator Seal:
4. Options (see pages 238-239):
5. Pressure Range (see page 235):
Consult factory for guidance in product selection
Phone (203) 378-8281 or visit our web site at
www.ashcroft.com
LOOK FOR THIS AGENCY
MARK ON OUR PRODUCTS
ATEX model shown
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