Submittal Sheet
L404A
spst,
breaks circuit
.14
to 1.0
35
to 3.5
.66
to 10.6
1.4 to 21.0
.14
to 1.1
.35
to 3.5
.66
to 10.6
1.4 to
21.0
.14
to 1.0
.35
to 3.5
.66
to 10.6
1.4
to21.0
14 to 103
34to345
69 to 1034
138 to 2068
14 to 103
24 to 345
69 to 1034
138 to 2068
14 to 103
34to345
69 to 1034
138to2068
15 to40
1
1.04 to2.76
1
103 to276
manual reset
(fixed, subtractive
differential)
500
t
:z
225
500
TABLE I-MODELS AVAILABLE
SWITCHING
ACTION
ON
L404D
L404F
L604A
spst,
makes circuit
spdt snap-acting
switch,g
makes R-W,
breaks R-B
2 isolated spstcircuits, or 1 spdt,h
makes Rl-W, breaks
R2-B
2 to 15
.14 to
1.0
14 to 103
manual
reseti10 to 150
.66
to 10.6 69 to 1068 (fixed, subtractive
2z
differential)
2to15
5to5Of
.14
to 1.0 14 to 103
2to6
.14
to
.41
14 to41 50
35
to 3.5
34to345
6tol4
.41
to
.97
41 to 9710 to 150
66
to 10.6
20 to
3OOb
69 to 1034 10 to 22
.69
to 15.2
6Oto152
2!z
1.4 to21.0 138to2086
20to50
1.4 to 3.5
138to345
5M)
2 to 15
1 to6
.14
to 1.0 14 to 103
.07
to
.41
7 to 41
5to50
35
to 3.5
34to345
4to12
.28
to
.82
27 to 83
z:
10 to 15020 to
3OOb
66
to 10.6
69to1034
8tol6
56
to 1.10 55 to 110
1.4 to21.0
138 to 2068 15 to 40 1.04 to 2.76 103 to 276
z
spdtcircuit
makes R-W, breaks
R-B
spdtcircuit
makes R-W, breaks
R-B
manual reseti
(fixed, subtractive
differential)
fixed: 3.5 psi
j24.1
kPa]
34.5 3447
3.5
5.9
:;
T
15.5
1551
34.5 3447
3.5
15.5
1ZZ
‘Scaleplates are marked in both spi and
kg/cm2.
bBrass bellows replaces stainless steel diaphragm. Not suitable for use with ammonia, oxygen, or other corrosive materials.
‘Model available with special fixed low differential. Switch rated for 0.5 A at 120
Vat.
dModel
available with minimum operating pressure of 1.25 psi
[0.09
kg/cm2
or 8.62
kPa]
and minimum subtractive differential of 0.5 psi
[0.035
kg/cm2
or
3.45
kPa].
eModel
available with special fixed low differential. Switch rated for 0.5 A at 120
Vat.
fModel available with sealed bell crank adjustment.
gL404F only; all other models have mercury switches.
hSpst
switches operate in unison; spdt action when jumper is installed between Rl and R2.
iL404C,D
and
L604L
models are designated as “Manual Reset
2”
controllers. the trip-free reset mechanism does not permit the controller to function as an
automatic-reset device if the manual reset lever is held in the “reset” position. The subtractive differential is fixed at the minimum value of the adjustable
differential of the
L404A
for each corresponding operating range.
‘Also recommended for supervision of atomizing medium pressure (air or steam) in an oil burner system.
SWITCH CONTACT
RATING
(in amperes at
50/60
Hz):
TABLE II-CONVERSION TABLE (psi to
kPa)
MODEL
L404a
LOAD
Full
Load
120
240 120
248
Vat
Vat
Vdc Vdc
8.0
5.1
2.4
1.2
L604M
I
Load
I I
I
I
aL404F (snap-acting) does not have noninductive or dc ratings.
bL6L%A
and L have also been tested (and listed by Underwriters Labora-
tories Inc.) and breaking(not making) aload
witha
total rating
of9.8Afull
load,
plus
360
VA ignition,
plus 250 VA
pilot duty at 120 Vat.
OPERATING
SUBTRACTIVE
RANGE
DIFFERENTIAL
SCALE-
SCALE-
PLATE
EUUIVALENT
PLATE
EGUIVALENT
osi
kaIcm2
1
kPa
psi
kg/mar
1
kPa
oto15
I
0tol.o
I
oto103
I
.-
I
-
I
-
2to15
.14
to 1.0
14
to
103
1 to 6
.07
to
.4
7 to 41
L
2to6
.14
to
.4 14 to 41
5to50
.3
to 3.5 34to345
4to12
.3
to
.8
28 to 83
5to14
.4
to 1.0 41 to 97
5to 150 .3to10.3
34to
1034
-
lot0150
.7
to
10.3
69
to
1034
8tol6
.6
to
1.1
55
to 110
10 to 22
.7
to 1.5
69 to
152
20to 300
1.4to
20.7
138to
2068,
15to40
1.0
to
2.8
103
to
276
(
20 to 50
1
1.4 to 3.5
I138
to
345
PRINTED IN U.S.A.