Introduction
1.The B2 Series Pressure Switch incorporates a new compact design and is well-suited to today's popular
washing machines and dishwashers requiring two level controls.
2. The B2 Series Pressure Switch is also suitable for the use with either hybrid or full electronic controls. The switch allows quick installation and combines with high performance for accurate fills to ensure low water level and energy consumption, with overflow and dry heater safety.
Design Features & Specifications
1.Functions
- Two levels and one overflow
protection (optional)
- Heater-safety contact is always
present
-
2. Levels
- Make pressure: 25 to 400 mm W.C.
- Break pressure: 10 to 350 mm W.C.
- Differential: minimum 10 mm W.C.;
maximum 80 mm W.C.
(See the graph below to find details)
- Overflow pressure: 100 to 500mm
W.C.
-
3.Electrical ratings
ENEC Approved:
- 16(4) A @125/250V – main contacts
NO
- 4(4) A @125/250V – main contacts
NC
- 1(1) A @125/250V – overflow
protection
UL Approved:
- 16 A , 1/2HP @125/250V – main
contacts NO
- 4 A , 1/3HP @125/250V – main
contacts NC
- 1 A @125/250V – overflow
protection
4.Tolerance
- Main contact: ±5 mm W.C. standard
- Lower tolerance available on
request
- Overflow protection: ±15 mm W.C.
standard
5.Contacts
- Main contact: SPDT snap action
contact
- Overflow protection contact: Slow
action contact, which is normally
open
6.Terminals
- 6.35 x 0.80 according to IEC 760
- Group connector Rast 5
- Single connector using Rast 5 Code
- (Without additional isolation)
7.Mounting
- Standard screw mounting
- Snap-fixation mounting
- Others on demand
8.Pressure connection position
- Four positions for choice
- Other positions for tailor-made
9. Operating Temperature
- Maximum 85°C
10.Relative Humidity
- Maximum 95% at 40°C
Outline and Dimensions
Notes:1. All dimensions are in mm;
2. If the dimensions in this figure are not in accordance with drawing, please refer to drawing.
Socket Types Circuitry
Markings for Terminals:
Level 1:
11 – COM
12 – Main Contact NC
14 – Main Contact NO
Level 2:
21 – COM
22 – Main Contact NC
24 – Main Contact NO
26 – Overflow Protection Contact NO
Mounting types
Hose Connection Position
Four pressure connection positions for customer choice, if you need other position in your applications,
please contact our representative.
Mounting Orientation
Ordering Instructions
B2 Series 2 Level Pressure Switch
