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 HYDRAULIC PRESSURE SWITCH MODEL NUMBER:
To specify the exact switch desired, select entries from appropriate tables as shown in example below.
H 4 2 4 V X F S
3000 PSI
1234
5
1 – ENCLOSURE
Hydraulic pressure switch, Type 400, watertight
H4 enclosure meets NEMA 3, 4, 4X, 13 and IP66
requirements
.
2 – SWITCH ELEMENT SELECTION
Order Switch Elements
Code UL/CSA Listed SPDT
20
(3)
Narrow deadband ac 15A, 125/250 Vac
21 Ammonia service 5A, 125/250 Vac
22 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
⁄2A, 125 Vdc
1
⁄4A, 250 Vdc; 6A, 30 Vdc
25 Heavy duty dc 10A, 125 Vac or dc,
1
⁄8 HP, 125 Vac or dc
26
(3)
Sealed environment proof 15A, 125/250 Vac
27 High temperature 300°F 15A, 125/250 Vac
28 Manual reset trip on 15A, 125/250 Vac
increasing
29 Manual reset trip on 15A, 125/250 Vac
decreasing
32 Hermetically sealed switch, 11A, 125/250 Vac
general purpose 5A, 30 Vdc
42 Hermetically sealed switch, 1A, 125 Vac
gold contacts
UL/CSA Listed Dual (2 SPDT)
61
(3)
Dual narrow deadband 15A, 125/250 Vac
62
(3)
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
70 Dual low lev
el, gold contacts 1A, 125 Vac
3 – ACTUATOR SEAL
Code Process
and Temperature
Material Limits °F
(4)
V – Viton 20 to 300
Viton O-Ring,
Stainless Steel
Pressure
Connection
4 – OPTIONS
Use table from page 7
5 – STANDARD
PRESSURE RANGE
Adjustable Proof
Range Setpoint Pressure
psi Limits psi psi
1000 150-1000 12,000
2000 300-2000 12,000
3000 450-3000 12,000
5000 750-5000 10,000
7500 1125-7500 100,000
NOTES:
1 Standard switch.
2 Dual switches are 2 SPDT snap-action switches, not
independently adjustable.
3 Estimated dc rating, 0.4A, 120 Vdc (not UL listed).
4 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.