Submittal Sheet

B-Series Switches – Pressure, Differential Pressure,
Temperature & Hydraulic
BULLETIN SW10
Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA
Tel: [phone] • Fax: [phone]
email: [e-mail] • www.ashcroft.com
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
© Ashcroft Inc. 2007 10/08
B-SERIES PRESSURE AND DIFFERENTIAL PRESSURE SWITCH MODEL NUMBER:
To specify the exact switch desired, select entries from appropriate tables as shown in example below.
B 4 2 0 B X P K
600 PSI
1 23 4
5
1 – ENCLOSURE
Pressure switch, Type 400, watertight enclosure
B4
meets NEMA 3, 4, 4X, 13 and IP66 requirements.
Pressure s
witch, Type 700, explosion-proof
B7 enclosure meets Div. 1 & 2, NEMA 7, 9 and IP66
requirements.
Differential pressure switch, Type 400, water-
D4 tight enclosure meets NEMA 3, 4, 4X, 13 and
IP66 requirements.
Differential pressure switch, Type 700, explosion-
D7 proof enclosure meets Div. 1 & 2, NEMA 7, 9 and
IP66 requirements
.
2 – SWITCH ELEMENT SELECTION
Order Switch Elements
Code UL/CSA Listed SPDT
20
(7)
Narrow deadband ac 15A, 125/250 Vac
21 Ammonia service 5A, 125/250 Vac
22
(6)
Hermetically sealed switch, 5A, 125/250 Vac
narrow deadband
23 Heavy duty ac 22A, 125/250 Vac
24
(1)
General purpose 15A, 125/250/480 Vac
1
⁄ 2 A, 125 Vdc
1
⁄ 4 A, 250 Vdc; 6A, 30 Vdc
25
(2)
Heavy duty dc 10A, 125 Vac or dc,
1
⁄8 HP, 125 Vac or dc
26
(7)
Sealed environment proof 15A, 125/250 Vac
27 High temperature 300°F 15A, 125/250 Vac
28
(5)
Manual reset trip on 15A, 125/250 Vac
increasing
29
(5)
Manual reset trip on 15A, 125/250 Vac
decreasing
31 Low level (gold) contacts 1A, 125 Vac
32 Hermetically sealed switch, 11A, 125/250 Vac
general purpose 5A, 30 Vdc
42 Hermetically sealed switch,
1A, 125 Vac
gold contacts
50 Variable deadband 15A, 125/250 Vac
UL/CSA Listed Dual (2 SPDT)
61
(7)
Dual narrow deadband 15A, 125/250 Vac
62
(7)
Dual sealed environment 15A, 125/250 Vac
proof
63 Dual high temp. 300°F 15A, 125/250 Vac
64 Dual general purpose 15A, 125/250/480 Vac
1
⁄2A, 125 Vdc
1
⁄4A, 250 Vdc
65 Dual ammonia service 5A, 125/250 Vac
67
(4,6)
Dual hermetically sealed 5A, 125/250 Vac
switch, narrow deadband
68
(4)
Dual hermetically sealed 11A, 125/250 Vac
switch, general purpose 5A, 30 Vdc
70 Dual low level gold contacts 1A, 125 Vac
71
(4)
Dual hermetically sealed 1A, 125 Vac
switch, gold contacts
3 – ACTUATOR SEAL
Range
Code Process
and Temperature Vac. 0-600 1000 3000
Material Limits °F
(9)
˝ H
2
O psi psi psi
B – Buna-N 0 to 150 • • • •
V – Viton 20 to 300 • • •
T – Teflon 0 to 150 • • • •
S – 316L
(8)
0 to 300 ••
P – Monel
(8)
0 to 300 • •
4 – OPTIONS
Use table from page 6
5 – RANGE
Select from table on page 4
NOTES:
1 Standard switch.
2 Not available with psid ranges.
3 Dual switches are 2 SPDT snap-action switches, not independently
adjustable.
4 Wires cannot be terminated inside B400 switch enclosure.
5 Not available with type 700 enclosure.
6 Estimated dc. rating, 2.5A, 28 Vdc (not
UL listed).
7 Estimated dc rating, 0.4A, 120 Vdc (not UL listed).
8 Available on pressure only.
9 Ambient operating temperature limits –20 to 150°F, all styles, setpoint
shift of ±1% of range per 50°F temperature change is normal.
Switches are calibrated at 70°F reference.