Product Overview

June 2009
CA08102001E For more information visit: www.eaton.com
34-273
IEC Contactors & Starters
34
Freedom
Relays — Interchangeable Heater Overload
Contents
Description Page
Product Family Overview
Product Description . . . . . . 34-261
Features . . . . . . . . . . . . . . . 34-261
Standards and
Certifications . . . . . . . . . . 34-261
Interchangeable Heater
Overload Relays
Product Description . . . . . . 34-273
Features . . . . . . . . . . . . . . . 34-273
Standards and
Certifications . . . . . . . . . . 34-273
Factory Modifications . . . . 34-273
Accessories. . . . . . . . . . . . . 34-273
Replacement Parts . . . . . . . 34-274
Product Selection . . . . . . . 34-275
Heater Pack Selection . . . . 34-275
Accessories . . . . . . . . . . . . . . . 34-277
Auxiliary Contacts . . . . . . . 34-277
DC Magnet Coils . . . . . . . . 34-279
Renewal Parts . . . . . . . . . . . . . 34-284
Note: For more information, see
CA03402001E.
Product Description
C306 Overload Relays are designed for
use with CE or CN non-reversing and
reversing contactors. Four sizes are
available for overload protection up to
144 amperes.
32 Ampere Overload
Cat. No. C306DN3B
Features
■ Selectable manual or automatic
reset operation.
■ Interchangeable heater packs
adjustable ±24% to match motor
FLA and calibrated for use with
1.0 and 1.15 service factor motors.
❑ Heater packs for 32 ampere over-
load relay will mount in 75 ampere
overload relay — useful in derat-
ing applications such as jogging.
■ Class 10 or 20 heater packs.
■ Load lugs built into relay base.
■ Bimetallic, ambient compensated
operated. Trip free mechanism.
■ Electrically isolated NO-NC contacts
(pull RESET button to test).
■ Overload trip indication.
■ Shrouded or “fingerproof”
terminals to reduce possibility of
electrical shock.
■ Meets UL508 single-phasing
requirements.
Standards and Certifications
■ UL listed
■ CSA certified
■ NEMA compliance and EN60947-4-1
IEC 947-4-1 and (CE) Mark
Factory Modifications
Table 34-339. C306 Thermal Overload Relays with Mounting Adapter
Accessories
Table 34-340. DIN Rail and Panel Mounting Adapter

This Series “B” adapter will accept Series “A” or “B” overload relays (C306GN3 or C306GN3B).
C306TB2 can only be used with C306GN3.
Consists of a thermal overload relay mounted to a terminal base adapter — permits fast and easy
installation.
Description Catalog
Number
Price
U.S. $
C306DN3B + C306TB1
C306GN3B + C306TB2B
C306DT3B
C306GT3B
These adapters are required when component overload relays are to be separately mounted. The
terminal base adapter includes line terminals and connects with the overload relays listed in
Table 34-339.
Description Catalog
Number
Price
U.S. $
For 32 Ampere Overload Relay
For 75 Ampere Overload Relay
C306TB1
C306TB2B

Cat. No. C306TB1
Discount Symbol . . . . . . . . . . . . . . . . . . . . . . . 1CD1C