Danfoss Differential thermostat RT Data sheet

Data sheet

Thermostat, Differential thermostat RT

An RT thermostat is ﬁtted with a single-pole changeover switch.

The position of the contacts depends on the bulb temperature and the set scale value.

The RT series includes thermostats for general applications within industrial and marine refrigeration.

The RT series also includes diﬀerential thermostats, thermostats for neutral zone regulation and special thermostats with gold-plated contact surface for PLC applications.

Features • Waterproof versions, enclosure IP66

• Wide regulating range

• Wide range of units for industrial and marine applications

• Suitable for alternating and direct current

• Interchangeable contact system

• Special versions for PLC applications

• Safety Integrity Level: SIL 2 according to IEC 61508

Data sheet | Thermostat, Diﬀerential thermostat, type RT

Approvals

RT 2

RT 3

RT 4

RT 7

RT 8

RT 8L

RT 9

RT 11

• • • • • • • • • • • •

• • • • • • • • • • • • • • • • • • • • • • • •

RT 12

RT 13

RT 14

RT 14L

RT 15

RT 16L

RT 17

RT 23

RT 24

RT 34

RT 101

RT 102

RT 107

RT 140

RT 140 L

RT 270

•

• •

•

Lloyd’s Reg. of Shipping, LR

Germanischer Lloyd, GL

Det Norske Veritas, DNV

Bureau Veritas, BV

Russian Maritime Register of Shipping, RMRS

Technical data

• • • • • • • • • •

•

• • • • • • • • • • • • • • • • • • • • • • • •

Nippon Kaiji Kyokai, NKK

Korean Register of Shipping, KRS

Conformity with EN 60730-2-1 to 9

CE mark according to EN 60947-4, -5

China Compulsor y Certiﬁcate, CCC

Cable connection Pg 13.5. Cable diameter 6 – 14 mm.

Enclosure

Permissible ambient temperature

IP66 acc. to EN 60529 / IEC 60529, except for versions with ext. reset which are IP54.

-50 – 70 °C for thermostat housing.

Switches See “Ordering switches”

Properties according to EN 60947

Wire dimensions

solid / stranded 0.2 – 2.5 mm

ﬂexible, w / out ferrules 0.2 – 2.5 mm

ﬂexible, with ferrules 0.2 – 1.5 mm

Tightening torque max. 1.5 Nm

Rated impulse voltage 4 kV

Pollution degree 3

Short circuit protection, fuse 10 A

Insulation 400 V

Ingress Protection IP54, IP66

2

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Data sheet | Thermostat, Diﬀerential thermostat, type RT

Overview

[°C]

-50 0 50 100 150 200 250 300

Range

[°C]

Typ e

Vapour-charged with remote bulb (bulb coldest)

Adsorption-charged with remote bulb (bulb warmest or coldest)

Partial charge with remote bulb (bulb warmest) 70 – 150 RT 107

Vapour-charged with coiled capillary tube sensor (room thermostats)

Adsorption-charged with coiled capillary tube sensor (room thermostats) -25 – 15 RT 34

Adsorption-charged dead zone thermostats with remote bulb (bulb warmest or coldest)

Vapour-charged dead zone thermostat (room thermostat) 0 – 38 RT 16L

Adsorption-charged diﬀerential thermostats with remote bulb (bulb warmest or coldest) -30 – 40 RT 270

-45 – -15 RT 9

-30 – 0 RT 13

-25 – 15 RT 3

-25 – 15 RT 2, RT 7

-20 – 12 RT 8

-5 – 10 RT 12

-5 – 30 RT 14

5 – 22 RT 23

8 – 32 RT 15

15 – 34 RT 24

15 – 45 R T 140

25 – 90 RT 101, RT 102

-50 – -15 RT 17

-30 – 0 RT 11

-5 – 30 RT 4

-20 – 12 RT 8L

-5 – 30 RT 14L

15 – 45 RT 140L

-50 0 50 100 150 200 250 300

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Data sheet | Thermostat, Diﬀerential thermostat, type RT

Ordering

Thermostats

Diﬀerential ∆t

Charge Type

Bulb type

Regulation

range

At min.

range

setting

At max.

range

setting

Reset

[°C] [K] [K] [°C] [m]

RT 9 A -45 – 15 2.2 – 10.0 1.0 – 4.5 auto 150 2 017-506666

RT 3 A -25 – 15 2.8 – 10.0 1.0 – 4.0 auto 150 2 017-501466

Vapour 1)

RT 17 B -50 – -15 2.2 – 7.0 1.5 – 5.0 auto 100 – 017-511766

RT 11 B -30 – 0 1.5 – 6.0 1.0 – 3.0 auto 66 – 017- 50836 6

RT 4 B -5 – 30 1.5 – 7.0 1.2 – 4.0 auto 75 –

RT 13 A -30 – 0 1.5 – 6.0 1.0 – 3.0 auto 150 2 017-509766

RT 2 A -25 – 15 5.0 – 18.0 6.0 – 20.0 auto 150 2 017-500866

RT 8 A -20 – 12 1.5 – 7.0 1.5 – 7.0 auto 145 2 017- 506 366

RT 12 A -5 – 10 1.0 – 3.5 1.0 – 3.0 auto 65 2 017-5089 66

RT 23 A 5 – 22 1.1 – 3.5 1.0 – 3.0 auto 85 2 017-52786 6

RT 15 A 8 – 32 1.6 – 8.0 1.6 – 8.0 auto 150 2 017 -5115 66

Adsorption 2)

RT 24 A 15 – 34 1.4 – 4.0 1.4 – 3.5 auto 105 2 017-528566

RT 140 C 15 – 45 1.8 – 8.0 2.5 – 11.0 auto 240 2 017-523666

RT 102 D 25 – 90 2.4 – 10.0 3.5 – 20.0 auto 300 2 017-514766

RT 34 B -25 – 15 2.0 – 10.0 2.0 – 12.0 auto 100 – 017-511866

RT 7 A -25 – 15 2.0 – 10.0 2.5 – 14.0 auto 150 2 017-5 05366

RT 14 A -5 – 30 2.0 – 8.0 2.0 – 10.0 auto 150 2 017-509966

RT 101 A 25 – 90 2.4 – 10.0 3.5 – 20.0 auto 300 2 017- 50036 6

Partial 3) RT 107 A 70 – 150 6.0 – 25.0 1.8 – 8.0 auto 215 2 017- 51356 6

1

 The sensor must be located colder than thermostat housing and capillary tube.

2

 The sensor can be located warmer or colder than thermostat housing.

3

 The sensor must be located warmer than thermostat housing and capillary tube.

4

 With built-in heating coil − reduces the thermal diﬀerential

.

Max. bulb

temp.

Capillary

tube

length

Code no.

017-503666 017-503766 4)

Thermostats with adjustable dead zone

Neutral zone NZ

Charge Type

Bulb type

Regulation

range

Mechanical diﬀerential

At min.

range

setting

At max.

range

setting

[°C] [K] [K] [K] [°C] [m]

Vapour RT 16L B 0 – 38 1.5 – 0.7 1.5 – 5.0 0.7 – 1.9 10 0 – 017L0 02466

RT 8L A -20 – 12 1.5 1.5 – 4.4 1.5 – 4.9 145 2 017L00 306 6

Adsorption

RT 14L A -5 – 30 1. 5 1.5 – 5.0 1.5 – 5.0 15 0 2 017L00346 6

RT 140 L C 15 – 45 1.8 – 2.0 1.8 – 4.5 2.0 – 5.0 24 0 2 017L003166

RT 101L A 25 – 90 2.5 – 3.5 2.5 – 7.0 3.5 – 12.5 300 2 017L00 6266

Max. bulb

temp.

Capillary

tube

length

Code no.

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Data sheet | Thermostat, Diﬀerential thermostat, type RT

Ordering

Continued

Type of bulb / sensor

A B C D

Cylindrical remote sensor Room sensor Duct sensor Capillary tube sensor

Special versions

RT can be supplied with special switches. See next page.

When ordering, please state:

1. Ty pe

2. Code no. of standard unit

3. Code no. of special switch

Switches

Version Symbol Description Contact rating Reset Code no.

Single-pole changeover switch with terminal board proof against

Standard

SPDT

leakage current.

Fitted in all standard versions of type RT.

Snap action changeover contacts.

Auto 017-403066

Man. reset

Neutral zone

SPDT

For manual reset of unit after contact changeover on rising temperature.

For units with reset facility.

For manual reset of unit after contact changeover on falling temperature.

For units with reset facility.

Single-pole changeover switch with dead zone and terminal board proof against leakage current.

Alternating current

Ohmic:

AC 1 = 10 A, 400 V

Inductive:

AC 3 = 4 A, 400 V AC 15 = 3 A, 400 V

Dir. current:

DC 13 = 12 W, 220 V

Max. 017-404266

Min. 017-404166

Available only as a component part of RT

–

controls with adjustable neutral zone

DKRCC.PD.CB0.A9.02 | 520H12296 | 5