Selection Guide

ManualsBrandsFurnas Controls ManualsOverload Relay HeatersSMF Heater Element (2.85-3.06A)

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Siemens Industry, Inc.

Industrial Controls Catalog

Heater Table Number

Bimetal Standard Trip (Class 20) Bimetal Quick Trip (Class 10)

Compensated Compensated

Size

Controller

E Heaters K Heaters

or Size

Green Reset Green Reset

Class Description Amperage Letter 1Ph 3Ph 1Ph 3Ph

SMF Manual All — See Page 9/122

Magnetic

14, 22

Non-reversing,

00-4 B–J 213 233 313 332

Reversing

17, 18 Combination

25, 26 Reversing Combination

30, 32

Multi Speed 0-4 C-J — 233 — 332

83, 84 Pump Controllers

87, 89 Motor Control Centers

Panel Mounted

25-180A D–J 216 238 316 335

Overload Relay

ESP200 starters do not require heater elements.

Overload Relay Selection Multi-Speed

Each speed requires a separate set of overloads. The

adjustment range must be selected on the basis of the

full-load current for each particular speed.

To Select Heater Catalog Number Use

Product Class

Controller Size

Motor Amp

Phase

Find heater table number below,

using the Product Class, Controller

Size and Phase. Heater table number

is found in the column under the type

of overload and phase.

Refer to the specified table and use

the controller size and motor amps to

select the heater catalog number.

If motor amps are not known, an

approximate value may be found

on the previous page. These values

should be used with caution and only

when motor amps are not available.

Heaters shown on the following pages

provide a maximum trip rating of 125%

of minimum motor amperes for 40˚C

motors (service factor 1.15). For other

motors (service factor 1.0), select the

next lower listed heater catalog number

within the designated table which

provides a maximum trip rating of

approximately 115%.

Overload relays do not provide

protection against short circuits.

To ensure proper coordination with

short circuit protective device, select

heaters from the information packaged

with the control device.

Phase

Size

Class

14 C P 3 2 B C 81

Catalog No

Siemens / Speedfax Previous folio: 16-151, 10IC 8-151

Overload Relay Heater Tables

Selection of Heater Elements for Overload Relays

General

Summary of content (6 pages)

PAGE 1
Overload Relay Heater Tables Selection of Heater Elements for Overload Relays General To Select Heater Catalog Number Use 2. Refer to the specified table and use b Product Class b Controller Size the controller size and motor amps to select the heater catalog number. a. If motor amps are not known, an approximate value may be found on the previous page. These values should be used with caution and only when motor amps are not available.
PAGE 2
Manual Control Heater Elements, Class SMF General Ordering Information 1. Determine number of heater elements required from Table A. 2. Determine motor full load current and service factor. NOTE: If motor amps are unknown, an approximate value may be found on page 9/120. These values should be used with caution and only when motor amps are not available. 3. If the motor and controller are in the same ambient temperature: a. For 1.15 to 1.
PAGE 3
Overload Relay Heater Tables Full Load Motor Amps, Single Phase, Trip Class 20 – Tables 213, 216 Selection Table 213 for Class 14, 22 (1-Phase) Full Load Amps Size 00, 0, 1 Size 1P Size 2, 21⁄2 Heater Catalog No 0.37–0.40 0.41–0.44 0.45–0.47 0.48–0.52 0.53–0.57 0.58–0.62 0.63–0.69 0.70–0.74 0.75–0.81 0.82–0.85 0.86–0.93 0.94–1.03 1.04–1.11 1.12–1.22 1.23–1.34 1.35–1.53 1.54–1.71 1.72–1.92 1.93–2.12 2.13–2.24 2.25–2.43 2.44–2.57 2.58–2.86 2.87–3.16 3.17–3.35 3.36–3.58 3.59–3.90 3.91–4.25 4.26–4.77 4.
PAGE 4
Overload Relay Heater Tables Full Load Motor Amps, 3-Phase, Trip Class 20 – Tables 233, 238 Selection Table 233 for Class 14, 17, 18, 22, 25, 26, 30, 32, 83, 84, 87 (3-Phase) Full Load Amps Size 00, 0, 1 Size 13⁄4 Size 2, 21⁄2 Size 3, 31⁄2 Size 4 Heater Catalog No 0.38–0.40 0.41–0.43 0.44–0.48 0.49–0.53 0.54–0.57 0.58–0.62 0.63–0.66 0.67–0.72 0.73–0.80 0.81–0.85 0.86–0.92 0.93–0.99 1.00–1.08 1.09–1.23 1.24–1.37 1.38–1.54 1.55–1.69 1.70–1.80 1.81–1.94 1.95–2.07 2.08–2.26 2.27–2.54 2.55–2.69 2.70–2.
PAGE 5
Overload Relay Heater Tables Full Load Motor Amps, Single Phase, Trip Class 10 – Tables 313, 316 Selection Table 313 for Class 14, 22 (1-Phase) Full Load Amps Size 00, 0, 1 Size 1P Size 2, 21⁄2 Heater Catalog No 1.85–2.05 2.06–2.35 2.36–2.64 2.65–2.96 2.97–3.31 3.32–3.51 3.52–3.87 3.88–4.31 4.32–4.79 4.80–5.21 5.22–5.75 5.76–6.11 6.12–6.95 6.96–7.73 7.74–8.47 8.48–9.52 9.53–10.4 10.5–11.1 11.2–12.4 12.5–13.5 13.6–15.1 15.2–16.6 16.7–17.6 17.7–18.8 18.9–21.6 21.7–22.7 22.8–25.3 — — — — — — — — — — — 1.
PAGE 6
Overload Relay Heater Tables Full Load Motor Amps, 3-Phase, Trip Class 10 – Tables 332, 335 Selection Table 332 for Class 14, 17, 18, 22, 25, 26, 30, 32, 83, 84, 87 (3-Phase) Full Load Amps Size 00, 0, 1 Size 1 ⁄4 Size 2, 2 ⁄2 Size 3, 3 ⁄2 Size 4 Heater Catalog No List Price $ 1.52–1.65 1.66–1.79 1.80–1.94 1.95–2.15 2.16–2.37 2.38–2.56 2.57–2.87 2.88–3.13 3.14–3.37 3.38–3.72 3.73–4.00 4.01–4.35 4.36–4.99 5.00–5.38 5.39–5.79 5.80–6.43 6.44–6.83 6.84–7.83 7.84–8.23 8.24–9.59 9.60–9.90 10.0–10.7 10.